# C# HOMEWORK
---
[TOC]
## 一上
## Assignment6
### Assignment6_1
#### solution1
```csharp=
double a, d, n, sum = 0;
Console.Write("pls enter the value of a: ");
a = Convert.ToDouble(Console.ReadLine());
Console.Write("pls enter the value of d: ");
d = Convert.ToDouble(Console.ReadLine());
Console.Write("pls enter the value og N: ");
n = Convert.ToDouble(Console.ReadLine());
Console.WriteLine(" i sum");
Console.WriteLine("--- -----");
for (int i = 1; i<=n;i++)
{
sum = sum + a + (i - 1) * d;
Console.WriteLine("{0,3} {1}", i, sum);
}
```
#### solution2
```csharp=
double a, d, n, sum = 0, i = 1;
Console.Write("pls enter the value of a: ");
a = Convert.ToDouble(Console.ReadLine());
Console.Write("pls enter the value of d: ");
d = Convert.ToDouble(Console.ReadLine());
Console.Write("pls enter the value og N: ");
n = Convert.ToDouble(Console.ReadLine());
Console.WriteLine(" i sum");
Console.WriteLine("--- -----");
while(i<=n)
{
sum += + a + (i - 1) * d;
Console.WriteLine("{0,3} {1}", i, sum);
i++;
}
```
#### solution3
```csharp=
double a, d, n, sum, i;
Console.Write("Please enter the value of a: ");
a = Convert.ToDouble(Console.ReadLine());
Console.Write("Please enter the value of d: ");
d = Convert.ToDouble(Console.ReadLine());
Console.Write("Please enter the value of N: ");
n = Convert.ToDouble(Console.ReadLine());
Console.WriteLine(" i sum");
Console.WriteLine("--- -----");
sum = 0;
for (i = 1; i<= n ; i++)
{
sum = sum + a + (i - 1) * d;
Console.WriteLine("{0,3} {1,-5}",i,sum);
}
```
### Assignment6_2
#### solution1
```csharp=
double a = Convert.ToDouble(textBox1.Text);
double d = Convert.ToDouble(textBox2.Text);
double n = Convert.ToDouble(textBox3.Text);
double sum = 0;
textBox4.Text = " i sum \r\n--- ----- \r\n";
for (int i = 1; i <= n; i++)
{
sum = sum + a + (i - 1) * d;
textBox4.Text += string.Format("{0} {1}\r\n", i, sum);
}
```
#### solution2
```csharp=
double a = Convert.ToDouble(textBox1.Text);
double d = Convert.ToDouble(textBox2.Text);
double n = Convert.ToDouble(textBox3.Text);
double sum = 0;
int i = 1;
textBox4.Text = " i sum \r\n--- ----- \r\n";
while (i <= n)
{
sum = sum + a + (i - 1) * d;
textBox4.Text += string.Format("{0} {1}\r\n", i, sum);
i++;
}
```
#### solution3
```csharp=
double a, d, n, i, sum;
a = Convert.ToDouble(textBox1.Text);
d = Convert.ToDouble(textBox2.Text);
n = Convert.ToDouble(textBox3.Text);
i = 1;
sum = 0;
textBox4.Text = " i sum \r\n--- ----- \r\n";
/*
textBox4.Text += " i sum\r\n";
textBox4.Text += "--- -----\r\n";
*/
for (;i<=n;i++)
{
sum += a + (i - 1) * d;
textBox4.Text += string.Format("{0} {1}\r\n", i, sum);
/*
or
textBox4.Text += Convert.ToString(i) + " ";
textBox4.Text += Convert.ToString(sum)+"\r\n";
*/
}
```
### Assignment6_3
#### solution1
```csharp=
double n, m, up = 1, down = 1;
Console.Write("pls enter the value of n: ");
n = Convert.ToDouble(Console.ReadLine());
Console.Write("pls enter the value of m: ");
m = Convert.ToDouble(Console.ReadLine());
for(int i =1; i<=m;i++)
{
up = up * (n - (i-1));
down = down * (i);
}
Console.WriteLine("The combination is: " + up / down);
```
#### solution2
```csharp=
double n, m, up = 1, down = 1, i =0;
Console.Write("pls enter the value of n: ");
n = Convert.ToDouble(Console.ReadLine());
Console.Write("pls enter the value of m: ");
m = Convert.ToDouble(Console.ReadLine());
while(i<m)
{
up = up * (n - i);
down = down * (m - i);
i=i+1;
}
Console.WriteLine("The combination is: " + up / down);
```
#### solution3
```csharp=
double n, m, n1, m1, i;
Console.Write("Please enter the value of n: ");
n = Convert.ToDouble(Console.ReadLine());
Console.Write("Please enter the value of m: ");
m = Convert.ToDouble(Console.ReadLine());
n1 = 1;
m1 = 1;
for (i = 0;i < m;i++)
{
n1 *= (n-i);
m1 *= (m-i);
}
Console.WriteLine("The combination is: {0}", n1 /m1);
```
#### solution4
```csharp=
Console.Write("Please enter the value of n: ");
string s_n = Console.ReadLine();
int n = Convert.ToInt32(s_n);
Console.Write("Please enter the value of m: ");
string s_m = Console.ReadLine();
int m = Convert.ToInt32(s_m);
double a=1, b=1, c=1;
for (int i = 1; i <= n; i++)
a = a * i;
for (int i = 1; i <= m; i++)
b *= i;
for (int i = 1; i <= (n - m); i++)
c *= i;
double result = a / (b * c);
Console.WriteLine("The combination is: {0}", result);
```
### Assignment6_4
#### solution1
```csharp=
double num, i , a = 0, b = 0, c = 0, score;
Console.Write("pls enter student's number: ");
num = Convert.ToDouble(Console.ReadLine());
for (i = 1; i <= num; i += 1)
{
Console.Write("pls enter {0} student's score: ", i);
score = Convert.ToDouble(Console.ReadLine());
if (score >= 80)
a++;
else if (score >= 60)
b += 1;
else
c++;
}
Console.WriteLine("=======================");
Console.WriteLine("get a: " + a);
Console.WriteLine("get b: " + b);
Console.WriteLine("get c: " + c);
```
#### solution2
```csharp=
double num, i = 1, a = 0, b = 0, c = 0, score;
Console.Write("pls enter student's number: ");
num = Convert.ToDouble(Console.ReadLine());
while(i<=num)
{
Console.Write("pls enter {0} student's score: ", i);
score = Convert.ToDouble(Console.ReadLine());
if (score >= 80)
a++;
else if (score >= 60)
b += 1;
else
c++;
i++;
}
Console.WriteLine("=======================");
Console.WriteLine("get a: " + a);
Console.WriteLine("get b: " + b);
Console.WriteLine("get c: " + c);
```
#### solution3
```csharp=
int a, b, c;
a = 0;
b = 0;
c = 0;
Console.Write("請輸入學生人數: ");
double num = Convert.ToDouble(Console.ReadLine());
for (int i = 1; i<=num;i++)
{
Console.Write("請輸入第{0}個同學的成績: ", i);
double score = Convert.ToDouble(Console.ReadLine());
if (score >= 80)
a += 1;
else if (score >= 60)
b += 1;
else
c += 1;
}
Console.WriteLine("=========成績統計=========");
Console.WriteLine("得A個數: {0} \n得B個數: {1} \n得C個數: {2}", a, b, c);
```
### Assignment6_5
#### solution1
```csharp=
double num, data, ave = 0, i1, i2, a;
Console.Write("pls enter num: ");
num = Convert.ToDouble(Console.ReadLine());
Console.Write("pls enter data: ");
data = Convert.ToDouble(Console.ReadLine());
Console.WriteLine("");
for (i1=1;i1<=num;i1++)
{
Console.WriteLine("worker " + i1 + " how");
for(i2=1;i2<=data;i2++)
{
Console.Write("pls enter{0} data", i2);
a = Convert.ToDouble(Console.ReadLine());
ave = ave + a;
}
Console.WriteLine("ave:" + ave / data);
ave = 0;
Console.WriteLine("");
}
```
#### solution2
```csharp=
double num, data, ave = 0, i1, i2, a;
Console.Write("pls enter num: ");
num = Convert.ToDouble(Console.ReadLine());
Console.Write("pls enter data: ");
data = Convert.ToDouble(Console.ReadLine());
Console.WriteLine("");
i1 = 1;
i2 = 1;
while(i1<=num)
{
Console.WriteLine("worker " + i1 + " how");
while(i2<=data)
{
Console.Write("pls enter{0} data", i2);
a = Convert.ToDouble(Console.ReadLine());
ave = ave + a;
i2++;
}
Console.WriteLine("ave:" + ave / data);
ave = 0;
Console.WriteLine("");
i1++;
i2 = 1;
}
```
#### solution3
```csharp=
double num1, num2,i1,i2,ave,ave1;
Console.Write("請輸入操作人員數: ");
num1 = Convert.ToDouble(Console.ReadLine());
Console.Write("請輸入每個操作人員的資料數: ");
num2 = Convert.ToDouble(Console.ReadLine());
Console.WriteLine("");
for (i1 = 1; i1 <= num1; i1++)
{
ave = 0;
Console.WriteLine("操作員{0}號", i1);
for (i2 = 1; i2 <= num2; i2++)
{
Console.Write("請輸入第{0}筆資料: ", i2);
ave1 = Convert.ToDouble(Console.ReadLine());
ave += ave1;
}
Console.WriteLine("數據平均值為: {0}", ave / num2);
Console.WriteLine("");
```
### Assignment6_6
#### solution1
```csharp=
double num, sum, max, ave,ave2;
max = 0;
sum = 0;
ave = 0;
while(true)
{
Console.Write("請輸入一個整數(-1代表結束): ");
num = Convert.ToDouble(Console.ReadLine());
if (num == -1)
break;
else
{
if (num >= max)
max = num;
sum++;
ave = ave + num;
}
}
Console.WriteLine("=============================");
Console.WriteLine("最大的數字為: " + max);
Console.WriteLine("輸入數字的總數: " + sum);
Console.WriteLine("輸入數字的平均值為: " + ave/sum);
```
#### solution2
```csharp=
for(; ; )
{
Console.Write("請輸入一個整數(-1代表結束): ");
num = Convert.ToDouble(Console.ReadLine());
if (num == -1)
break;
else
{
if (num >= max)
max = num;
sum++;
ave = ave + num;
}
}
Console.WriteLine("=============================");
Console.WriteLine("最大的數字為: " + max);
Console.WriteLine("輸入數字的總數: " + sum);
Console.WriteLine("輸入數字的平均值為: " + ave / sum);
```
#### solution3
```csharp=
double max = 0, amount = 0, num = 0, f = 0;
while (true)
{
Console.Write("請輸入一個整數(-1代表結束): ");
num = Convert.ToDouble(Console.ReadLine());
if (num != -1)
{
max = max > num ? max : num;
amount += num;
f += 1;
}
else
break;
}
Console.WriteLine("=================================");
Console.WriteLine("最大的數字為: {0} \n輸入數字的總數為: {1} \n輸入數字的平均值為: {2}", max, f, amount/f);
```
### Assignment6_7
#### solution1
```csharp=
int num = Convert.ToInt32(textBox1.Text);
int amount = 0;
for (int i = 1;i>0;i++)
{
if (num / 7 == i)
{
amount += num + i;
if (amount / 7 >i)
{
amount++;
break;
}
else
break;
}
}
textBox2.Text = "你購買的數量: " + Convert.ToString(num) + "瓶\r\n" + "你可喝的數量: " + Convert.ToString(amount) + "瓶";
```
#### solution2
```csharp=
int num = Convert.ToInt32(textBox1.Text);
int num0 = num;
int c = num / 7;
num = num + c;
int b = num / 7;
if (b > c)
num = num + b - c;
textBox2.Text = string.Format("buy: {0} \r\ndrink: {1}", num0, num);
```
#### solution3
```csharp=
int original = Convert.ToInt32(textBox1.Text);
int current = original;
int total = original;
while (current >= 7)
{
current = current - 7 + 1;
total = total + 1;
}
//while (current >= 7)
//{
// total = total + current / 7;
// current = current % 7 + current / 7; // current % 7 => 目前喝剩下的瓶數; current / 7 => 換來的瓶數
//}
textBox2.Text = "你購買的數量： " + original + " 瓶" + "\r\n";
textBox2.Text += "你可喝的數量： " + total + " 瓶";
```
## Assignment7
### Assignment7_1
#### solution1
```csharp=
int [] a = new int [10];
int max = -10000000, e = 0 ;
for (int i = 0;i<a.Length;i++)
{
Console.Write("Enter the number {0}: ",i+1);
a[i] = Convert.ToInt32(Console.ReadLine());
if (a[i] >= max)
{
max = a[i];
e = i;
}
}
Console.WriteLine("");
Console.WriteLine("Largest number is: {0}", max);
Console.WriteLine("It's element number<s> is: {0}", e+1);
```
#### solution2
```csharp=
int [] a = new int [10];
int max = -10000000, e = 0 ;
for (int i = 0;i<10;i++)
{
Console.Write("Enter the number"+(i+1)+": ");
a[i] = Convert.ToInt32(Console.ReadLine());
if (a[i] >= max)
{
max = a[i];
e = i;
}
}
Console.Write("\n");
Console.WriteLine("Largest number is: "+ max);
Console.WriteLine("It's element number<s> is: " + e+1);
```
#### solution3
```csharp=
int max = 0, en = 0;
int[] array1 = new int[10];
for (int i = 0;i<10;i++)
{
Console.Write("Enter the number {0}: ", i+1);
array1[i] = Convert.ToInt32(Console.ReadLine());
if (i == 0)
max = array1[i];
else
max = max >= array1[i] ? max : array1[i];
if (max == array1[i])
en = i+1;
}
Console.WriteLine("");
Console.WriteLine("Largest number is: " + max);
Console.WriteLine("It's element number<s> is: " + en);
```
### Assignment7_2
#### solution1
```csharp=
int[] a = new int[10];
int max = -10000000;
for (int i = 0; i < a.Length; i++)
{
Console.Write("Enter the number {0}: ", i + 1);
a[i] = Convert.ToInt32(Console.ReadLine());
if (a[i] >= max)
max = a[i];
}
Console.WriteLine("");
Console.WriteLine("Largest number is: {0}", max);
Console.Write("It's element number<s> is: ");
for (int i = 0; i<10;i++)
{
if (max == a[i])
Console.Write(i + 1 + " ");
}
Console.WriteLine("");
```
#### solution2
```csharp=
int [] a = new int [10];
int max = -10000000 ;
for (int i = 0;i<10;i++)
{
Console.Write("Enter the number"+(i+1)+": ");
a[i] = Convert.ToInt32(Console.ReadLine());
if (a[i] >= max)
max = a[i];
}
Console.Write("\n");
Console.WriteLine("Largest number is: "+ max);
Console.Write("It's element number<s> is: ");
for (int i = 0; i<10;i++)
{
if (max == a[i])
Console.Write(i + 1 + " ");
}
Console.Write("\n");
```
#### solution3
```csharp=
int max = 0;
int[] array1 = new int[10];
for (int i = 0; i < 10; i++)
{
Console.Write("Enter the number {0}: ", i + 1);
array1[i] = Convert.ToInt32(Console.ReadLine());
if (i == 0)
max = array1[i];
else
max = max >= array1[i] ? max : array1[i];
}
Console.WriteLine("");
Console.WriteLine("Largest number is: " + max);
Console.Write("It's element number<s> is: ");
for (int i1 = 0; i1 < 10; i1++)
{
if (max == array1[i1])
Console.Write(i1+1+" ");
}
Console.WriteLine("");
```
### assignment7_3
#### solution1
```csharp=
int[] a = new int[10];
int max = -10000000;
Console.Write("pls enter the your num: ");
int b = Convert.ToInt32(Console.ReadLine());
Console.WriteLine("");
for (int i = 0; i < b; i++)
{
Console.Write("Enter the number {0}: ", i + 1);
a[i] = Convert.ToInt32(Console.ReadLine());
if (a[i] >= max)
max = a[i];
}
Console.WriteLine("");
Console.WriteLine("Largest number is: {0}", max);
Console.Write("It's element number<s> is: ");
for (int i = 0;i<b;i++)
{
if (max == a[i])
Console.Write(i + 1 + " ");
}
Console.WriteLine("");
```
#### solution2
```csharp=
int max = -10000000;
Console.Write("pls enter the your num: ");
int b = Convert.ToInt32(Console.ReadLine());
Console.WriteLine("");
int[] a = new int[b];
for (int i = 0; i < a.Length; i++)
{
Console.Write("Enter the number {0}: ", i + 1);
a[i] = Convert.ToInt32(Console.ReadLine());
if (a[i] >= max)
max = a[i];
}
Console.WriteLine("");
Console.WriteLine("Largest number is: {0}", max);
Console.Write("It's element number<s> is: ");
for (int i = 0; i<a.Length;i++)
{
if (max == a[i])
Console.Write(i + 1 + " ");
}
Console.WriteLine("");
```
##### solution3
```csharp=
Console.Write("Please enter the amount of your numbers: ");
int num = Convert.ToInt32(Console.ReadLine());
int[] array = new int[num];
int max = 0;
Console.WriteLine("");
for(int i = 0;i<array.Length;i++)
{
Console.Write("Enter the number {0}: ", i + 1);
array[i] = Convert.ToInt32(Console.ReadLine());
if (i == 0)
max = array[i];
else
max = max > array[i] ? max : array[i];
}
Console.WriteLine("");
Console.WriteLine("Largest number is: " + max);
Console.Write("It's element number<s> is: ");
for (int i2 = 0; i2 < array.Length; i2++)
{
if (max == array[i2])
Console.Write(i2 + 1 + " ");
}
Console.WriteLine("");
```
### Assignment7_4
#### solution1
```csharp=
int max = -10000000;
Console.Write("pls enter the your num: ");
string b = Console.ReadLine();
Console.WriteLine("");
string[] a = b.Split(',');
for (int i = 0; i < a.Length; i++)
{
int c = Convert.ToInt32(a[i]);
Console.Write("Enter the number {0}: ", i + 1);
Console.WriteLine(c);
if (c >= max)
max = c;
}
Console.WriteLine("");
Console.WriteLine("Largest number is: {0}", max);
Console.Write("It's element number<s> is: ");
for (int i = 0; i<a.Length;i++)
{
int c = Convert.ToInt32(a[i]);
if (max ==c)
Console.Write(i + 1 + " ");
}
Console.WriteLine("");
```
#### solution2
```csharp=
```
#### solution3
```csharp=
Console.Write("Enter a set of numbers: ");
string num = Console.ReadLine();
string[] array = num.Split(','); // #單引號(字元)
Console.WriteLine("");
int max = 0;
for (int i = 0; i < array.Length; i++)
{
Console.WriteLine("The number {0}: {1}",i+1,array[i] );
int ass = Convert.ToInt32(array[i]);
if (i == 0)
max = ass;
else
max = max > ass ? max : ass;
}
Console.WriteLine("");
Console.WriteLine("Largest number is: " + max);
Console.Write("It's element number<s> is: ");
for(int i2 = 0;i2<array.Length;i2++)
{
int bnn = Convert.ToInt32(array[i2]);
if (max == bnn)
Console.Write(i2+1 + " ");
}
Console.WriteLine("");
```
### Assignment7_5
#### solution1
```csharp=
string[] Name = { "王一 ", "黃二 ", "張三 ", "李四 ", "陳五 ", "丁六 ", "鄭七 " };
int[] Chinese = { 80, 45, 60, 90, 20, 50, 70 };
Console.Write("成績分割點<只能輸入0~100的整數>: ");
int a = Convert.ToInt32(Console.ReadLine());
Console.WriteLine("");
Console.WriteLine("國文成績大於及等於 {0} 者:", a);
Console.WriteLine("姓名 成績");
for (int i = 0;i<Name.Length;i++)
{
if (Chinese[i] >= a)
Console.WriteLine(Name[i] + " " + Chinese[i]);
}
Console.WriteLine("");
Console.WriteLine("");
Console.WriteLine("國文成績小於 {0} 者:", a);
Console.WriteLine("姓名 成績");
for (int i = 0; i < Name.Length; i++)
{
if (Chinese[i] < a)
Console.WriteLine(Name[i] + " " + Chinese[i]);
}
```
#### solution2
```csharp=
```
#### solution3
```csharp=
string[] Name = { "王一 ", "黃二 ", "張三 ", "李四 ", "陳五 ", "丁六 ", "鄭七 " };
int[] Chinese = { 80, 45, 60, 90, 20, 50,70};
Console.Write("成績分割點<只能輸入0~100的整數>: ");
int num = Convert.ToInt32(Console.ReadLine());
Console.WriteLine("");
Console.WriteLine("國文成績大於及等於 {0} 者:", num);
Console.WriteLine("姓名 成績");
for(int i = 0;i<Name.Length;i++)
{
if (Chinese[i] >= num)
Console.WriteLine(Name[i] + " " + Chinese[i]);
}
Console.WriteLine("\n");
Console.WriteLine("國文成績小於 {0} 者:", num);
Console.WriteLine("姓名 成績");
for (int i = 0; i < Name.Length; i++)
{
if (Chinese[i] < num)
Console.WriteLine(Name[i] + " " + Chinese[i]);
}
Console.WriteLine("");
```
### Assignment7_6
#### solution1
```csharp=
int num = Convert.ToInt32(textBox1.Text);
string[] Name = { "王一 ", "黃二 ", "張三 ", "李四 ", "陳五 ", "丁六 ", "鄭七 " };
int[] Chinese = { 80, 45, 60, 90, 20, 50, 70 };
label2.Text = string.Format("國文成績大於及等於{0}者:",num);
label3.Text = string.Format("國文成績小於{0}者:",num);
textBox2.Text = "姓名 成績\r\n";
for (int i = 0;i<Name.Length;i++)
{
if(Chinese[i]>=num)
textBox2.Text += (Name[i] + " " + Chinese[i] + "\r\n");
}
if (textBox2.Text == "姓名 成績\r\n")
textBox2.Text = "無此學生";
textBox3.Text = "姓名 成績\r\n";
for (int i = 0; i < Name.Length; i++)
{
if (Chinese[i] < num)
textBox3.Text += (Name[i] + " " + Chinese[i] + "\r\n");
}
if (textBox3.Text == "姓名 成績\r\n")
textBox3.Text = "無此學生";
```
#### solution2
```csharp=
```
#### solution3
```csharp=
int num = Convert.ToInt32(textBox1.Text);
string[] Name = { "王一 ", "黃二 ", "張三 ", "李四 ", "陳五 ", "丁六 ", "鄭七 " };
int[] Chinese = { 80, 45, 60, 90, 20, 50, 70 };
label2.Text = string.Format("國文成績大於及等於{0}者:",num);
label3.Text = string.Format("國文成績小於{0}者:",num);
int ass = 0;
int bnn = 0;
for (int i = 0; i < Name.Length; i++)
{
if (Chinese[i] >= num)
ass++;
else
bnn++;
}
textBox2.Text = "姓名 成績\r\n";
for (int i = 0;i<Name.Length;i++)
{
if (bnn == Name.Length)
textBox2.Text = "無此學生";
else
if(Chinese[i]>=num)
textBox2.Text += (Name[i] + " " + Chinese[i] + "\r\n");
}
textBox3.Text = "姓名 成績\r\n";
for (int i = 0; i < Name.Length; i++)
{
if (ass == Name.Length)
textBox3.Text = "無此學生";
else
{
if (Chinese[i] < num)
textBox3.Text += (Name[i] + " " + Chinese[i] + "\r\n");
}
}
```
### Assignment7_7
#### solution1
```csharp=
string[] Name = { "王一", "黃二", "張三", "李四", "陳五", "丁六", "鄭七" };
int[] Chinese = { 80, 45, 60, 90, 20, 50, 70 };
string[] Department = { "工管系", "機械系", "化材系", "化材系", "工管系", "機械系", "工管系" };
string[] Gender = { "男 ", "男 ", "女", "男", "女", "女", "男" };
int num = Convert.ToInt32(textBox1.Text);
label2.Text = "國文成績大於等於及等於" + num + "者:";
label3.Text = "國文成績小於" + num + "者:";
textBox2.Text = "";
textBox3.Text = "";
for (int i = 0; i < Chinese.Length; i++)
{
if (Chinese[i] >= num)
{
if (checkBox1.Checked == true && checkBox2.Checked == true)
textBox2.Text += (Name[i] + " " + Chinese[i] + " " + Department[i] + " " + Gender[i] + "\r\n");
else if (checkBox1.Checked == false && checkBox2.Checked == true)
textBox2.Text += (Name[i] + " " + Chinese[i] + " " + Gender[i] + "\r\n");
else if (checkBox1.Checked == true && checkBox2.Checked == false)
textBox2.Text += (Name[i] + " " + Chinese[i] + " " + Department[i] + "\r\n");
else
textBox2.Text += (Name[i] + " " + Chinese[i] + "\r\n");
}
if (Chinese[i] < num)
{
if (checkBox1.Checked == true && checkBox2.Checked == true)
textBox3.Text += (Name[i] + " " + Chinese[i] + " " + Department[i] + " " + Gender[i] + "\r\n");
else if (checkBox1.Checked == true && checkBox2.Checked == false)
textBox3.Text += (Name[i] + " " + Chinese[i] + " " + Department[i] + "\r\n");
else if (checkBox1.Checked == false && checkBox2.Checked == true)
textBox3.Text += (Name[i] + " " + Chinese[i] + " " + Gender[i] + " " + "\r\n");
else
textBox3.Text += (Name[i] + " " + Chinese[i] + "\r\n");
}
}
if (textBox2.Text == "")
textBox2.Text = "無此學生";
if (textBox3.Text == "")
textBox3.Text = "無此學生";
```
#### solution2
```csharp=
```
#### solution3
```csharp=
string[] Name = { "王一", "黃二", "張三", "李四", "陳五", "丁六", "鄭七" };
int[] Chinese = { 80, 45, 60, 90, 20, 50, 70 };
string[] Department = { "工管系", "機械系", "化材系", "化材系", "工管系", "機械系", "工管系" };
string[] Gender = { "男 ", "男 ", "女", "男", "女", "女", "男" };
int num = Convert.ToInt32(textBox1.Text);
int ass = 0, bnn = 0;
label2.Text = "國文成績大於等於及等於" + num + "者:";
label3.Text = "國文成績小於" + num + "者:";
for (int i = 0;i<Chinese.Length;i++)
{
if (Chinese[i] >= num)
ass++;
else
bnn++;
}
textBox2.Text = "";
textBox3.Text = "";
for (int i = 0; i < Chinese.Length; i++)
{
if (ass == 0)
textBox2.Text = "無此學生";
else if (Chinese[i] >= num)
{
if (checkBox1.Checked == true && checkBox2.Checked == true)
textBox2.Text += (Name[i] + " " + Chinese[i] + " " + Department[i] + " " + Gender[i] + "\r\n");
else if (checkBox1.Checked == true && checkBox2.Checked == false)
textBox2.Text += (Name[i] + " " + Chinese[i] + " " + Department[i] + "\r\n");
else if (checkBox1.Checked == false && checkBox2.Checked == true)
textBox2.Text += (Name[i] + " " + Chinese[i] + " " + Gender[i] + "\r\n");
else
textBox2.Text += (Name[i] + " " + Chinese[i] + "\r\n");
}
if (bnn == 0)
textBox3.Text = "無此學生";
else if (Chinese[i] < num)
{
if (checkBox1.Checked == true && checkBox2.Checked == true)
textBox3.Text += (Name[i] + " " + Chinese[i] + " " + Department[i] + " " + Gender[i] + "\r\n");
else if (checkBox1.Checked == true && checkBox2.Checked == false)
textBox3.Text += (Name[i] + " " + Chinese[i] + " " + Department[i] + "\r\n");
else if (checkBox1.Checked == false && checkBox2.Checked == true)
textBox3.Text += (Name[i] + " " + Chinese[i] + " " + Gender[i] + " " + "\r\n");
else
textBox3.Text += (Name[i] + " " + Chinese[i] + "\r\n");
}
}
```
### Assignment7_8
#### solution1
```csharp=
int num = Convert.ToInt32(textBox1.Text);
label2.Text = "國文成績大於及等於" + num + "者:";
label3.Text = "國文成績小於" + num + "者:";
string[] Name = { "王一", "黃二", "張三", "李四", "陳五", "丁六", "鄭七" };
int[] Chinese = { 80, 45, 60, 90, 20, 50, 70 };
string[] Gender = { "男", "男", "女", "男", "女", "女", "男" };
textBox2.Text = "";
textBox3.Text = "";
for (int i = 0;i<Chinese.Length;i++)
{
if (Chinese[i] < num)
{
if (radioButton1.Checked == true)
{
if (Gender[i] == "男")
textBox3.Text += Name[i] + " " + Chinese[i] + " " + Gender[i] + "\r\n";
}
if (radioButton2.Checked == true)
{
if (Gender[i] == "女")
textBox3.Text += Name[i] + " " + Chinese[i] + " " + Gender[i] + "\r\n";
}
}
if (Chinese[i] >= num)
{
if (radioButton1.Checked == true)
{
if (Gender[i] == "男")
textBox2.Text += Name[i] + " " + Chinese[i] + " " + Gender[i] + "\r\n";
}
if (radioButton2.Checked == true)
{
if (Gender[i] == "女")
textBox2.Text += Name[i] + " " + Chinese[i] + " " + Gender[i] + "\r\n";
}
}
}
if (textBox2.Text == "")
textBox2.Text = "無此學生";
if (textBox3.Text == "")
textBox3.Text = "無此學生";
}
```
#### solution2
```csharp=
```
#### solution3
```csharp=
int num = Convert.ToInt32(textBox1.Text);
label2.Text = "國文成績大於及等於" + num + "者:";
label3.Text = "國文成績小於" + num + "者:";
string[] Name = { "王一", "黃二", "張三", "李四", "陳五", "丁六", "鄭七" };
int[] Chinese = { 80, 45, 60, 90, 20, 50, 70 };
string[] Gender = { "男", "男", "女", "男", "女", "女", "男" };
int ass = 0, bnn = 0;
for(int i = 0;i<Chinese.Length;i++)
{
if (Chinese[i] >= num)
ass++;
else
bnn++;
}
textBox2.Text = "";
textBox3.Text = "";
for (int i = 0;i<Chinese.Length;i++)
{
if (ass == Chinese.Length)
textBox3.Text = "無此學生";
else if (Chinese[i] < num)
{
if (radioButton1.Checked == true)
{
if (Gender[i] == "男")
textBox3.Text += Name[i] + " " + Chinese[i] + " " + Gender[i] + "\r\n";
}
if (radioButton2.Checked == true)
{
if (Gender[i] == "女")
textBox3.Text += Name[i] + " " + Chinese[i] + " " + Gender[i] + "\r\n";
}
}
if (bnn == Chinese.Length)
textBox2.Text = "無此學生";
else if (Chinese[i] >= num)
{
if (radioButton1.Checked == true)
{
if (Gender[i] == "男")
textBox2.Text += Name[i] + " " + Chinese[i] + " " + Gender[i] + "\r\n";
}
if (radioButton2.Checked == true)
{
if (Gender[i] == "女")
textBox2.Text += Name[i] + " " + Chinese[i] + " " + Gender[i] + "\r\n";
}
}
}
if (textBox2.Text == "")
textBox2.Text = "無此學生";
if (textBox3.Text == "")
textBox3.Text = "無此學生";
```
---
## 一下
## Assignment1
### Assignment1_1
#### solution1
```csharp=
class Program
{
static void Main(string[] args)
{
string[] Name = { "王一", "黃二", "張三", "李四", "陳五", "丁六", "鄭七" };
int[] Chinese = { 80, 45, 60, 90, 20, 50, 70 };
Console.Write("成績分割點 <只能輸入0~100的整數>: ");
int point = Convert.ToInt32(Console.ReadLine());
Console.WriteLine("");
Console.WriteLine("國文成績大於及等於 {0} 者:", point);
Console.WriteLine("姓名 成績");
for (int i = 0; i < Name.Length; i++)
{
if (Chinese[i] >= point)
Console.WriteLine(Name[i] + " " + Chinese[i]);
}
Console.WriteLine("\n");
Console.WriteLine("國文成績小於 {0} 者:", point);
Console.WriteLine("姓名 成績");
for(int i = 0;i<Name.Length;i++)
{
if (Chinese[i] < point)
Console.WriteLine(Name[i] + " " + Chinese[i]);
}
Console.WriteLine("");
}
}
```
#### solution2
```csharp=
class Program
{
static void Main(string[] args)
{
Console.Write("成績分割點 <只能輸入0~100的整數>: ");
int point = Convert.ToInt32(Console.ReadLine());
score Score = new score();
Score.get(point);
}
}
class score
{
public void get(int point)
{
string[] Name = { "王一", "黃二", "張三", "李四", "陳五", "丁六", "鄭七" };
int[] Chinese = { 80, 45, 60, 90, 20, 50, 70 };
Console.WriteLine("");
Console.WriteLine("國文成績大於及等於 {0} 者:", point);
Console.WriteLine("姓名 成績");
for (int i = 0; i < Name.Length; i++)
{
if (Chinese[i] >= point)
Console.WriteLine(Name[i] + " " + Chinese[i]);
}
Console.WriteLine("\n");
Console.WriteLine("國文成績小於 {0} 者:", point);
Console.WriteLine("姓名 成績");
for (int i = 0; i < Name.Length; i++)
{
if (Chinese[i] < point)
Console.WriteLine(Name[i] + " " + Chinese[i]);
}
Console.WriteLine("");
}
}
```
### Assignment1_2
#### solution1
```csharp=
class Program
{
static void Main(string[] args)
{
string[] ToDoList = { "領錢", "小工盃比賽", "看電影", "準備統計小考", "買文具", "睡覺", "吃飯" };
int[] Priority = { 3, 2, 7, 1, 6, 4, 5 };
Console.Write("查看待辦事項數目: ");
int num = Convert.ToInt32(Console.ReadLine());
for(int i = 1;i<=num;i++)
{
for(int i2 = 0;i2<Priority.Length;i2++)
{
if (Priority[i2] == i)
Console.WriteLine("優先順序{0}: {1}", i, ToDoList[i2]);
}
}
}
}
```
#### solution2
```csharp=
class Program
{
static void Main(string[] args)
{
string[] ToDoList = { "領錢", "小工盃比賽", "看電影", "準備統計小考", "買文具", "睡覺", "吃飯" };
int[] Priority = { 3, 2, 7, 1, 6, 4, 5 };
Array.Sort(Priority,ToDoList); //Array.Sort(int[],string[]);
Console.Write("查看待辦事項數目: ");
int num = Convert.ToInt32(Console.ReadLine());
for(int i = 0; i < num; i++)
{
Console.WriteLine("優先順序" + (i+1) + ": " + ToDoList[i]);
}
}
}
```
### Assignment1_3
#### solution1
```csharp=
class Program
{
static void Main(string[] args)
{
string[] Name = { "王一", "黃二", "張三", "李四", "陳五", "丁六", "鄭七" };
int[] Chinese = { 80, 45, 60, 90, 20, 50, 70 };
for(int i = 0; i < Chinese.Length - 1; i++)
{
for(int i2 = i+1;i2<Chinese.Length;i2++)
{
if (Chinese[i] < Chinese[i2])
{
int temp_chinese = Chinese[i2];
Chinese[i2] = Chinese[i];
Chinese[i] = temp_chinese;
string temp_name = Name[i2];
Name[i2] = Name[i];
Name[i] = temp_name;
}
}
}
for(int i = 0; i < Name.Length; i++)
{
Console.WriteLine(Name[i]+": "+Chinese[i]);
}
}
}
```
#### solution2
```csharp=
class Program
{
static void Main(string[] args)
{
string[] Name = { "王一", "黃二", "張三", "李四", "陳五", "丁六", "鄭七" };
int[] Chinese = { 80, 45, 60, 90, 20, 50, 70 };
for (int i = 0; i < Chinese.Length; i++)
{
for (int i2 = 0; i2 < Chinese.Length-1-i; i2++)
{
if (Chinese[i2] < Chinese[i2+1])
{
int temp_chinese = Chinese[i2];
Chinese[i2] = Chinese[i2+1];
Chinese[i2+1] = temp_chinese;
string temp_name = Name[i2];
Name[i2] = Name[i2+1];
Name[i2+1] = temp_name;
}
}
}
for (int i = 0; i < Name.Length; i++)
{
Console.WriteLine(Name[i] + ": " + Chinese[i]);
}
}
}
```
### Assignment1_4
#### solution1
```csharp=
class Program
{
static void Main(string[] args)
{
string[] Name = { "王一", "黃二", "張三", "李四", "陳五", "丁六", "鄭七" };
Random randint = new Random();
Console.Write("請輸入人數: ");
int num = Convert.ToInt32(Console.ReadLine());
int[] random_array = new int[Name.Length];
for (int i = 0; i < Name.Length; i++)
{
random_array[i] = randint.Next(1, Name.Length + 1);
for (int i2 = 0; i2 < i; i2++)
{
while (random_array[i2] == random_array[i])
{
i2 = 0;
random_array[i] =randint.Next(1, Name.Length + 1);
}
}
}
for (int i3 = 1; i3 <= num; i3++)
{
for (int i4 = 0; i4 < Name.Length; i4++)
{
if (random_array[i4] == i3)
{
Console.WriteLine(Name[i4]);
}
}
}
}
}
```
#### solution2
```csharp =
class Program
{
static void Main(string[] args)
{
string[] Name = { "王一", "黃二", "張三", "李四", "陳五", "丁六", "鄭七" };
Random randint = new Random();
// Console.Write("請輸入人數: ");
//int num = Convert.ToInt32(Console.ReadLine());
int[] random_array = new int[Name.Length];
for (int i = 0; i < Name.Length; i++)
{
random_array[i] = randint.Next(1, Name.Length + 1);
for (int i2 = 0; i2 < i;i2++ )
{
if (random_array[i2] == random_array[i])
{
i2 = -1;
random_array[i] = randint.Next(1, Name.Length + 1);
}
}
}
for(int i = 0; i < Name.Length; i++)
{
Console.WriteLine(random_array[i]);
}
for (int i3 = 1; i3 <= num; i3++)
{
for (int i4 = 0; i4 < Name.Length; i4++)
{
if (random_array[i4] == i3)
{
Console.WriteLine(Name[i4]);
}
}
}
}
}
```
#### solution3
```csharp=
class Program
{
static void Main(string[] args)
{
string[] Name = { "王一", "黃二", "張三", "李四", "陳五", "丁六", "鄭七" };
Random rnd = new Random();
Console.Write("請輸入人數: ");
int num = Convert.ToInt32(Console.ReadLine());
int[] arr = new int[num];
for(int i = 0; i < num; i++)
{
arr[i] = rnd.Next(0, Name.Length);
for(int i2 = 0; i2 < i; i2++)
{
while(arr[i2] == arr[i])
{
i2 = 0;
arr[i] = rnd.Next(0, Name.Length);
}
}
}
for (int i3 = 0; i3 < num; i3++)
{
Console.WriteLine(Name[arr[i3]]);
}
}
}
```
## Assignment2
### Assignment2_1
#### solution1
```csharp=
class Program
{
static void Main(string[] args)
{
double[,] price = { { 0, 140, 480, 950 }, { 130, 0, 550, 880 }, { 520, 430, 0, 520 }, { 980, 870, 500, 0 } };
string[] station = { "台北", "桃園", "台中", "高雄" };
Console.Write("最便宜票價為: ");
double ticket_price = Convert.ToDouble(Console.ReadLine());
int starting_point = 0, end_point = 0, b = 0;
if (ticket_price != 0)
{
for (int i = 0; i < price.GetLength(0); i++)
{
end_point = 0;
for (int i2 = 0; i2 < price.GetLength(1); i2++)
{
if (price[i, i2] == ticket_price)
{
b = 1;
break;
}
end_point++;
}
if (b == 1)
break;
starting_point++;
}
Console.WriteLine("起始站為: {0} \n終點站為: {1}", station[starting_point], station[end_point]);
}
else
Console.Write("");
}
}
```
#### solution2
```csharp=
double[,] price = { { 0, 140, 480, 950 }, { 130, 0, 550, 880 }, { 520, 430, 0, 520 }, { 980, 870, 500, 0 } };
string[] station = { "台北", "桃園", "台中", "高雄" };
Console.Write("最便宜票價為: ");
double ticket_price = Convert.ToDouble(Console.ReadLine());
if (ticket_price != 0)
{
for (int i = 0; i < price.GetLength(0); i++)
{
for (int i2 = 0; i2 < price.GetLength(1); i2++)
{
if (price[i, i2] == ticket_price)
{
Console.WriteLine("起始站為: {0} \n終點站為: {1}", station[i], station[i2]);
}
}
}
}
else
Console.Write("");
```
#### solution1_change
```csharp=
class Program
{
static void Main(string[] args)
{
double[,] price = { { 0, 140, 480, 950 }, { 130, 0, 550, 880 }, { 520, 430, 0, 520 }, { 980, 870, 500, 0 } };
string[] station = { "台北", "桃園", "台中", "高雄" };
double min = price[0, 1];
string result = "";
for(int i =0;i<price.GetLength(0);i++)
{
for(int i2 = 0;i2<price.GetLength(1);i2++)
{
if(i!=i2)
{
if (min > price[i, i2])
{
min = price[i, i2];
result = String.Format("最便宜票價為: {0}\n起始站為: {1}\n終點站為: {2}",min,station[i],station[i2]);
}
}
}
}
Console.WriteLine(result);
Console.ReadKey();
}
}
```
#### solution2_change
```csharp=
class Program
{
static void Main(string[]args)
{
double[,] price = { { 0, 140, 480, 950 }, { 130, 0, 550, 880 }, { 520, 430, 0, 520 }, { 980, 870, 500, 0 } };
string[] station = { "台北", "桃園", "台中", "高雄" };
double min = 1;
int num1 = 0, num2 = 0;
for(int i = 0;i<price.GetLength(0);i++)
{
for(int i2 = 0;i2<price.GetLength(1);i2++)
{
if(i!=i2)
{
if (min == 1)
min = price[i, i2];
if (min > price[i, i2])
{
min = price[i, i2];
num1 = i;
num2 = i2;
}
}
}
}
Console.WriteLine("最便宜票價為: " + min);
Console.WriteLine("起始站為: "+station[num1]);
Console.WriteLine("終點站為: "+ station[num2]);
Console.ReadKey();
}
}
```
### Assignment2_2
#### solution1
```csharp=
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void label4_Click(object sender, EventArgs e)
{
}
private void Form1_Load(object sender, EventArgs e)
{
string[] station = { "台北", "桃園", "台中", "高雄" };
for(int i = 0;i<station.Length;i++)
{
comboBox1.Items.Add(station[i]); //Add 方法：items屬性的方法之一
comboBox2.Items.Add(station[i]);
}
//comboBox1.Text = station[0]; 預選值
//or comboBox1.SelectedIndex = 0;
}
private void button1_Click(object sender, EventArgs e)
{
double[,] price = { { 0, 140, 480, 950 }, { 130, 0, 550, 880 }, { 520, 430, 0, 520 }, { 980, 870, 500, 0 } };
int starting_station = comboBox1.SelectedIndex; //SelectedIndex 屬性返回一個表示與當前選定列表項的索引的整數值，可以程式設計更改它
int end_station = comboBox2.SelectedIndex;
label4.Text = Convert.ToString(price[starting_station, end_station]);
//SelectedItem 屬性與 SelectedIndex 屬性類似，但是SelectedItem 屬性返回的是項
//SelectedText 屬性：表示組合框中當前選定文字的字串
//BeginUpdate 方法和 EndUpdate 方法：當使用Add 方法一次新增一個項時，則可以使用 BeginUpdate 方法，以防止每次向列表新增項時控制元件都重新繪製 ComboBox。完成向列表新增項的任務後，呼叫 EndUpdate 方法來啟用 ComboBox 進行重新繪製。當向列表新增大量的項時，使用這種方法新增項可以防止繪製 ComboBox 時閃爍
}
}
```
#### solution1
```csharp=
private void Form1_Load(object sender, EventArgs e)
{
string[] station = { "台北", "桃園", "台中", "高雄" };
foreach (string text in station)
{
comboBox1.Items.Add(text);
comboBox2.Items.Add(text);
}
comboBox1.SelectedIndex = 0;
comboBox2.SelectedIndex = 0;
}
private void button1_Click_1(object sender, EventArgs e)
{
double[,] price = { { 0, 140, 480, 950 }, { 130, 0, 550, 880 }, { 520, 430, 0, 520 }, { 980, 870, 500, 0 } };
label4.Text = Convert.ToString(price[comboBox1.SelectedIndex, comboBox2.SelectedIndex]);
}
```
### Assignment2_3
#### solution1
```csharp=
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
string[,] student = {
{ "王一", "80", "55" },
{ "黃二", "45", "50" },
{ "張三", "60", "40" },
{ "李四", "90", "80" },
{ "陳五", "20", "70" } };
double chinese_score = Convert.ToDouble(textBox1.Text);
double english_score = Convert.ToDouble(textBox2.Text);
textBox3.Text = "姓名 國文 英文\r\n";
int student_chinese, student_english;
for(int i = 0;i<student.GetLength(0);i++)
{
student_chinese = Convert.ToInt32(student[i, 1]);
student_english = Convert.ToInt32(student[i, 2]);
if (student_chinese >= chinese_score && student_english>=english_score)
textBox3.Text += string.Format("{0} {1} {2} \r\n", student[i, 0], student[i, 1], student[i, 2]);
}
}
}
```
#### solution2
```csharp=
private void button1_Click_1(object sender, EventArgs e)
{
int c = Convert.ToInt32(textBox1.Text);
int i = Convert.ToInt32(textBox1.Text);
int a, b;
string[,] student = {
{ "王一", "80", "55" },
{ "黃二", "45", "50" },
{ "張三", "60", "40" },
{ "李四", "90", "80" },
{ "陳五", "20", "70" } };
textBox3.Text = "name chinese english\r\n";
for(int i2 = 0;i2<student.GetLength(0);i2++)
{
a = Convert.ToInt32(student[i2, 1]);
b = Convert.ToInt32(student[i2, 2]);
if (c <= a && i <= b)
textBox3.Text += student[i2, 0] + " " + student[i2, 1] + " " + student[i2, 2] + "\r\n";
}
}
```
### Assignment2_4
#### solution1
```csharp=
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
DataTable table = new DataTable();
private void Form1_Load(object sender, EventArgs e)
{
table.Columns.Add("姓名");
table.Columns.Add("國文");
table.Columns.Add("英文");
dataGridView1.DataSource = table;
}
private void button1_Click(object sender, EventArgs e)
{
string[,] student = {
{ "王一", "80", "55" },
{ "黃二", "45", "50" },
{ "張三", "60", "40" },
{ "李四", "90", "80" },
{ "陳五", "20", "70" } };
table.Rows.Clear();
int chinese_score = Convert.ToInt32(textBox1.Text);
int english_score = Convert.ToInt32(textBox2.Text);
int student_chinese, student_english;
string[] name;
for (int i = 0;i<student.GetLength(0);i++)
{
student_chinese = Convert.ToInt32(student[i, 1]);
student_english = Convert.ToInt32(student[i, 2]);
if (student_chinese >= chinese_score && student_english >= english_score)
{
name = new string[student.GetLength(1)];
for(int i2 = 0;i2<student.GetLength(1);i2++)
{
name[i2] = student[i,i2];
}
table.Rows.Add(name);
}
}
}
}
```
#### solution2
```csharp=
private void Form1_Load(object sender, EventArgs e)
{
dt.Columns.Add("name");
dt.Columns.Add("chinese");
dt.Columns.Add("english");
dataGridView1.DataSource = dt;
}
private void button1_Click_1(object sender, EventArgs e)
{
string[,] student = {
{ "王一", "80", "55" },
{ "黃二", "45", "50" },
{ "張三", "60", "40" },
{ "李四", "90", "80" },
{ "陳五", "20", "70" } };
dt.Rows.Clear();
int chinese_score = Convert.ToInt32(textBox1.Text);
int english_score = Convert.ToInt32(textBox2.Text);
int student_chinese, student_english;
for (int i = 0; i < student.GetLength(0); i++)
{
student_chinese = Convert.ToInt32(student[i, 1]);
student_english = Convert.ToInt32(student[i, 2]);
if (student_chinese >= chinese_score && student_english >= english_score)
dt.Rows.Add(student[i,0],student[i,1],student[i,2]);
}
}
```
## Assignment3
### Assignment3_1
#### solution1
```csharp=
public DataTable dt = new DataTable();
private void Form1_Load(object sender, EventArgs e)
{
dt.Columns.Add("Name");
dt.Columns.Add("Min");
dt.Columns.Add("Max");
dt.Columns.Add("Mean");
dt.Columns.Add("SD");
dataGridView1.DataSource = dt;
}
private void button1_Click(object sender, EventArgs e)
{
openFileDialog1.Filter = "text files(*.txt)|*.txt|All files(*.*)|*.*";
openFileDialog1.InitialDirectory = "C:";
openFileDialog1.Title = "開啟";
openFileDialog1.FileName = "";
if (openFileDialog1.ShowDialog() == DialogResult.OK)
textBox1.Text = openFileDialog1.FileName;
}
private void button2_Click(object sender, EventArgs e)
{
dt.Rows.Clear();
string path = textBox1.Text;
FileInfo fi = new FileInfo(path);
StreamReader sr = fi.OpenText();
string temp;
int column = 0,row = 0;
while((temp = sr.ReadLine())!=null)
{
if (row == 0)
column = temp.Split(',').Length;
row++;
}
sr.Close();
sr = fi.OpenText();
string[,] data = new string[row, column];
int index = 0;
while((temp = sr.ReadLine())!= null)
{
for (int i = 0; i < column; i++)
data[index, i] = temp.Split(',')[i];
index++;
}
sr.Close();
double min, max, sum, tempnum, mean,sd1,sd2;
for(int i = 1;i<row;i++)
{
min = Convert.ToDouble(data[i, 1]);
max = Convert.ToDouble(data[i, 1]);
sum = 0;
sd1 = 0;
for(int i2 = 1;i2<column;i2++)
{
tempnum = Convert.ToDouble(data[i, i2]);
if (min > tempnum)
min = tempnum;
if (max < tempnum)
max = tempnum;
sum += tempnum;
sd1 += tempnum * tempnum;
}
mean = sum / (column-1);
sd2 = Math.Sqrt(sd1 / (column-1) - mean * mean);
dt.Rows.Add(data[i, 0], min, max, mean, sd2);
}
}
```
### Assignment3_2
#### solution1
```csharp=
public class scores
{
public string name { get; set; }
public string department { get; set; }
public int exam1 { get; set; }
public int exam2 { get; set; }
public int exam3 { get; set; }
public int exam4 { get; set; }
public int exam5 { get; set; }
public int exam6 { get; set; }
public int exam7 { get; set; }
}
private void button1_Click(object sender, EventArgs e)
{
openFileDialog1.Filter = "json files(*.json)|*.json|All files(*.*)|*.*";
openFileDialog1.InitialDirectory = "C:";
openFileDialog1.Title = "開啟";
openFileDialog1.FileName = "";
if (openFileDialog1.ShowDialog() == DialogResult.OK)
textBox1.Text = openFileDialog1.FileName;
}
private void button2_Click(object sender, EventArgs e)
{
string path = textBox1.Text;
string json = File.ReadAllText(path);
var jd = JsonDocument.Parse(json);
var rootelement = jd.RootElement;
var scrpro = rootelement.GetProperty("scores");
int len = 0;
foreach (JsonElement element in scrpro.EnumerateArray())
len++;
double[,] exam = new double[len,7];
int index = 0;
foreach(JsonElement element in scrpro.EnumerateArray())
{
var obj = element.Deserialize<scores>();
exam[index, 0] = obj.exam1;
exam[index, 1] = obj.exam2;
exam[index, 2] = obj.exam3;
exam[index, 3] = obj.exam4;
exam[index, 4] = obj.exam5;
exam[index, 5] = obj.exam6;
exam[index, 6] = obj.exam7;
index++;
}
textBox2.Text = "Exam Mean Stdand Deviation\r\n";
double sum, mean, sd1, sd2;
for(int i =0;i<exam.GetLength(1);i++)
{
sum = 0; sd1 = 0;
for(int i2 = 0;i2<exam.GetLength(0);i2++)
{
sum += exam[i2, i];
sd1 += exam[i2, i] * exam[i2, i];
}
mean = sum / exam.GetLength(0);
sd2 = Math.Sqrt(sd1 / exam.GetLength(0) - mean * mean);
textBox2.Text += $"{i+1} {mean} {sd2}\r\n";
}
}
```
#### solution2 by育桀
```csharp=
public class Rootobject
{
public string name { get; set; }
public string department { get; set; }
public int exam1 { get; set; }
public int exam2 { get; set; }
public int exam3 { get; set; }
public int exam4 { get; set; }
public int exam5 { get; set; }
public int exam6 { get; set; }
public int exam7 { get; set; }
}
private void Form1_Load(object sender, EventArgs e)
{
}
private void button1_Click(object sender, EventArgs e)
{
if (openFileDialog1.ShowDialog() == DialogResult.OK)
{
textBox1.Text = openFileDialog1.FileName;
}
}
private void button2_Click(object sender, EventArgs e)
{
var json = File.ReadAllText(textBox1.Text);
var jd = JsonDocument.Parse(json);
var root = jd.RootElement;
textBox2.Text = "";
double ind=0;
double exam1 = 0, exam2 = 0, exam3 = 0, exam4 = 0, exam5 = 0, exam6 = 0, exam7 = 0;
double sum1 = 0, sum2 = 0, sum3 = 0, sum4 = 0, sum5 = 0, sum6 = 0, sum7 = 0;
foreach (JsonElement elem in root.GetProperty("scores").EnumerateArray())
{
ind++;
var obj = elem.Deserialize<Rootobject>();
exam1 += obj.exam1;
exam2 += obj.exam2;
exam3 += obj.exam3;
exam4 += obj.exam4;
exam5 += obj.exam5;
exam6 += obj.exam6;
exam7 += obj.exam7;
sum1 += obj.exam1 * obj.exam1;
sum2 += obj.exam2 * obj.exam2;
sum3 += obj.exam3 * obj.exam3;
sum4 += obj.exam4 * obj.exam4;
sum5 += obj.exam5 * obj.exam5;
sum6 += obj.exam6 * obj.exam6;
sum7 += obj.exam7 * obj.exam7;
}
double mean1 = exam1 / ind;
double mean2 = exam2 / ind;
double mean3 = exam3 / ind;
double mean4 = exam4 / ind;
double mean5 = exam5 / ind;
double mean6 = exam6 / ind;
double mean7 = exam7 / ind;
double sd1= Math.Sqrt(Math.Abs(sum1 / ind - (mean1 * mean1)));
double sd2= Math.Sqrt(Math.Abs(sum2 / ind - (mean2 * mean2)));
double sd3= Math.Sqrt(Math.Abs(sum3 / ind - (mean3 * mean3)));
double sd4= Math.Sqrt(Math.Abs(sum4 / ind - (mean4 * mean4)));
double sd5= Math.Sqrt(Math.Abs(sum5 / ind - (mean5 * mean5)));
double sd6= Math.Sqrt(Math.Abs(sum6 / ind - (mean6 * mean6)));
double sd7= Math.Sqrt(Math.Abs(sum7 / ind - (mean7 * mean7)));
textBox2.Text = "Exam\t" + "Mean\t\t " + "Standard Deviation\r\n" + "1\t" + mean1 +
"\t " + sd1+"\r\n"+ "2\t" + mean2 +"\t " + sd2+ "\r\n" + "3\t" + mean3 + "\t " + sd3+ "\r\n" +
"4\t" + mean4 +"\t " + sd4+ "\r\n" + "5\t" + mean5 +"\t " + sd5+ "\r\n" + "6\t" + mean6 + "\t " + sd6 + "\r\n" +
"7\t" + mean7 + "\t " + sd7 + "\r\n";
}
```
### Assignment3_3
#### solution1
```csharp=
public class scores
{
public string name { get; set; }
public string department { get; set; }
public int exam1 { get; set; }
public int exam2 { get; set; }
public int exam3 { get; set; }
public int exam4 { get; set; }
public int exam5 { get; set; }
public int exam6 { get; set; }
public int exam7 { get; set; }
}
private void Form1_Load(object sender, EventArgs e)
{
string path = Environment.CurrentDirectory + "/scores.json";
string json = File.ReadAllText(path);
var jd = JsonDocument.Parse(json);
var rootelement = jd.RootElement;
var scropro = rootelement.GetProperty("scores");
foreach(JsonElement element in scropro.EnumerateArray())
{
var obj = element.Deserialize<scores>();
listBox1.Items.Add(obj.name);
}
}
private void button1_Click(object sender, EventArgs e)
{
string path = Environment.CurrentDirectory + "/scores.json";
string json = File.ReadAllText(path);
var jd = JsonDocument.Parse(json);
var rootelement = jd.RootElement;
var scropro = rootelement.GetProperty("scores");
foreach (JsonElement element in scropro.EnumerateArray())
{
var obj = element.Deserialize<scores>();
if (listBox1.SelectedItem.ToString() == obj.name)
{
textBox1.Text = $"Exam1: {obj.exam1}\r\n" +
$"Exam2: {obj.exam2}\r\n" +
$"Exam3: {obj.exam3}\r\n" +
$"Exam4: {obj.exam4}\r\n" +
$"Exam5: {obj.exam5}\r\n" +
$"Exam6: {obj.exam6}\r\n" +
$"Exam7: {obj.exam7}\r\n";
break;
}
}
}
```
### Assignment3_4
#### solution1
```csharp=
public class scores
{
public string name { get; set; }
public string department { get; set; }
public int exam1 { get; set; }
public int exam2 { get; set; }
public int exam3 { get; set; }
public int exam4 { get; set; }
public int exam5 { get; set; }
public int exam6 { get; set; }
public int exam7 { get; set; }
}
private void button1_Click(object sender, EventArgs e)
{
openFileDialog1.Filter = "json files(*.json)|*.json|All files(*.*)|*.*";
openFileDialog1.InitialDirectory = "C:";
openFileDialog1.Title = "開啟";
openFileDialog1.FileName = "";
if (openFileDialog1.ShowDialog() == DialogResult.OK)
{
textBox1.Text = openFileDialog1.FileName;
}
}
private void button2_Click(object sender, EventArgs e)
{
string path = textBox1.Text;
string json = File.ReadAllText(path);
var jd = JsonDocument.Parse(json);
var rootelement = jd.RootElement;
var scropro = rootelement.GetProperty("scores");
double sum, mean, sd1, sd2;
textBox3.Text = "Name Department Mean SD\r\n";
textBox3.Text += "==========================================\r\n";
int num1 = 0,num2 = 0;
foreach(JsonElement element in scropro.EnumerateArray())
{
sum = 0; sd1 = 0;
var obj = element.Deserialize<scores>();
sum += obj.exam1 + obj.exam2 + obj.exam3 + obj.exam4 + obj.exam5 + obj.exam6 + obj.exam7;
mean = sum / 7;
sd1 += obj.exam1 * obj.exam1 +
obj.exam2 * obj.exam2 +
obj.exam3 * obj.exam3 +
obj.exam4 * obj.exam4 +
obj.exam5 * obj.exam5 +
obj.exam6 * obj.exam6 +
obj.exam7 * obj.exam7;
sd2 = Math.Sqrt(sd1 / 7 - mean * mean);
if (textBox2.Text == obj.department)
{
textBox3.Text += obj.name + " " + obj.department + " " + $"{mean:F4}" + " "+ $"{sd2:F4}"+"\r\n";
num2++;
num1 = num2;
}
}
textBox3.Text += string.Format("================================\r\n符合資格者共: {0}位", num1);
}
```
## 考題下載
[Download](https://github.com/KXAINGW/wahahahaha)
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