# 113 TestRandomArray2
# x和y陣列中的數字:
# - 請用亂數產生介於0~30之間的整數
# - 亂數之取得可參考 java.lang.Math的靜態方法 random()
# - public static double random():傳回亂數值其範圍為0.0~1.0

public class TestRandomArray2 {

public static void main(String[] args) {
TestRandomArray2 tra = new TestRandomArray2();
int[][] x = tra.getRandomArray();
int[][] y = tra.getRandomArray();

int[][] z = new int[3][3];
for (int i = 0; i < z.length; i++) {
for (int j = 0; j < z[i].length; j++) {
z[i][j] = x[i][j] + y[i][j];
}
}

tra.printArray(x);
tra.printArray(y);
tra.printArray(z);

}

public int[][] getRandomArray() {
int[][] data = new int[3][3];
for (int i = 0; i < data.length; i++) {
for (int j = 0; j < data[i].length; j++) {
data[i][j] = (int)(Math.random() * 31);
}
}
return data;
}

public void printArray(int[][] data) {
for (int i = 0; i < data.length; i++) {
for (int j = 0; j < data[i].length; j++) {
System.out.print(data[i][j] + "\t");
}
System.out.println();
}

System.out.println("=======================");
}

}