KangMoo
    • Create new note
    • Create a note from template
      • Sharing URL Link copied
      • /edit
      • View mode
        • Edit mode
        • View mode
        • Book mode
        • Slide mode
        Edit mode View mode Book mode Slide mode
      • Customize slides
      • Note Permission
      • Read
        • Only me
        • Signed-in users
        • Everyone
        Only me Signed-in users Everyone
      • Write
        • Only me
        • Signed-in users
        • Everyone
        Only me Signed-in users Everyone
      • Engagement control Commenting, Suggest edit, Emoji Reply
    • Invite by email
      Invitee

      This note has no invitees

    • Publish Note

      Share your work with the world Congratulations! 🎉 Your note is out in the world Publish Note

      Your note will be visible on your profile and discoverable by anyone.
      Your note is now live.
      This note is visible on your profile and discoverable online.
      Everyone on the web can find and read all notes of this public team.
      See published notes
      Unpublish note
      Please check the box to agree to the Community Guidelines.
      View profile
    • Commenting
      Permission
      Disabled Forbidden Owners Signed-in users Everyone
    • Enable
    • Permission
      • Forbidden
      • Owners
      • Signed-in users
      • Everyone
    • Suggest edit
      Permission
      Disabled Forbidden Owners Signed-in users Everyone
    • Enable
    • Permission
      • Forbidden
      • Owners
      • Signed-in users
    • Emoji Reply
    • Enable
    • Versions and GitHub Sync
    • Note settings
    • Note Insights New
    • Engagement control
    • Transfer ownership
    • Delete this note
    • Save as template
    • Insert from template
    • Import from
      • Dropbox
      • Google Drive
      • Gist
      • Clipboard
    • Export to
      • Dropbox
      • Google Drive
      • Gist
    • Download
      • Markdown
      • HTML
      • Raw HTML
Menu Note settings Note Insights Versions and GitHub Sync Sharing URL Create Help
Create Create new note Create a note from template
Menu
Options
Engagement control Transfer ownership Delete this note
Import from
Dropbox Google Drive Gist Clipboard
Export to
Dropbox Google Drive Gist
Download
Markdown HTML Raw HTML
Back
Sharing URL Link copied
/edit
View mode
  • Edit mode
  • View mode
  • Book mode
  • Slide mode
Edit mode View mode Book mode Slide mode
Customize slides
Note Permission
Read
Only me
  • Only me
  • Signed-in users
  • Everyone
Only me Signed-in users Everyone
Write
Only me
  • Only me
  • Signed-in users
  • Everyone
Only me Signed-in users Everyone
Engagement control Commenting, Suggest edit, Emoji Reply
  • Invite by email
    Invitee

    This note has no invitees

  • Publish Note

    Share your work with the world Congratulations! 🎉 Your note is out in the world Publish Note

    Your note will be visible on your profile and discoverable by anyone.
    Your note is now live.
    This note is visible on your profile and discoverable online.
    Everyone on the web can find and read all notes of this public team.
    See published notes
    Unpublish note
    Please check the box to agree to the Community Guidelines.
    View profile
    Engagement control
    Commenting
    Permission
    Disabled Forbidden Owners Signed-in users Everyone
    Enable
    Permission
    • Forbidden
    • Owners
    • Signed-in users
    • Everyone
    Suggest edit
    Permission
    Disabled Forbidden Owners Signed-in users Everyone
    Enable
    Permission
    • Forbidden
    • Owners
    • Signed-in users
    Emoji Reply
    Enable
    Import from Dropbox Google Drive Gist Clipboard
       Owned this note    Owned this note      
    Published Linked with GitHub
    • Any changes
      Be notified of any changes
    • Mention me
      Be notified of mention me
    • Unsubscribe
    ## 과제_0 : OOP 특징을 활용한 클래스 구조 설계 목표 : OOP 특징을 활용하여 클래스를 설계한다. 요구사항 : - 이전에 만든 `Human`, `Lion`, `Elephant`, `Dolphin`, `Turtle` 5개의 클래스의 공통 부모 클래스 `Animal`을 상속한다. - `Animal` 클래스는 추상 클래스로 만든다 - `Human`, `Lion`, `Elephant`, `Dolphin`, `Turtle`의 공통 필드 및 메서드를 부모 클래스 `Animal`에 구현한다. - `age`, `wegiht` 필드 및 `getter`, `setter`, `grow()`, `eat()` 메서드 - `Animal` 클래스는 `public abstract void move()` 메서드를 가지고 있다. - `Human`, `Lion`, `Elephant` 클래스는 `move()` 내부에 `walk()` 메서드를 호출한다. - `Dolphin`, `Turtle` 클래스는 `move()` 내부에 `swim()` 메서드를 호출한다. - `Human`, `Lion`, `Elephant`, `Dolphin`, `Turtle` 모두 `toString()` 메서드를 오버라이딩하여 클래스 이름, `age`, `weight` 정보를 출력한다. > 해당 문제는 정답이 없으므로 부담없이 설계해보자 ## 과제_1 : 배열 중복 제거 목표 : 배열에서 중복된 숫자를 제거하고, 중복되지 않은 숫자만을 반환하는 함수를 만들어본다 요구사항 : 다음 메서드를 완성하라 ```java public static int[] removeDuplicate(int[] numbers) { // 코드를 작성 } ``` - 반환될 배열의 길이는 중복된 숫자가 제거된 길이여야 한다 - 정렬 후의 배열 순서는 상관하지 않는다 --- **예시** ```java int[] numbers = {0, 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5}; int[] result = removeDuplicate(numbers); System.out.println(Arrays.toString(result)); // [0, 1, 2, 3, 4, 5] (순서는 상관하지 않는다) ``` ## 과제_2 : 프로그래머스 문제 풀기 1. [최소 직사각형](https://school.programmers.co.kr/learn/courses/30/lessons/86491) 2. [모의고사](https://school.programmers.co.kr/learn/courses/30/lessons/42840) --- ## 과제_0 : OOP 특징을 활용한 클래스 구조 설계 모범답안 ```java abstract class Animal { protected int age; protected int weight; public Animal(int age, int weight) { this.age = age; this.weight = weight; } public void grow() { this.age++; } public void eat() { this.weight++; } public int getAge() { return this.age; } public int getWeight() { return this.weight; } public void setAge(int age) { this.age = age; } public void setWeight(int weight) { this.weight = weight; } public abstract void move(); @Override public String toString() { return "Animal{" + "age=" + age + ", weight=" + weight + '}'; } } ``` ## 과제_1 : 배열 중복 제거 모범 답안 ```java public static int[] removeDuplicate(int[] numbers) { Integer[] temp = new Integer[numbers.length]; int count = 0; for (int i = 0; i < numbers.length; ++i) { int number = numbers[i]; for(int j = 0; j < temp.length; ++j) { if (temp[j] == null) { temp[j] = number; ++count; break; } else if (temp[j] == number) { break; } } } int[] res = new int[count]; for(int i = 0; i< temp.length; ++i){ if(temp[i] != null){ res[i] = temp[i]; } } return res; } ``` ## 과제_2 : 프로그래머스 문제 풀기 모범 답안 1. 최소 직사각형 ```java class Solution { public int solution(int[][] sizes) { int maxW = 0; int maxH = 0; for(int i =0; i<sizes.length; ++i){ int[] size = sizes[i]; int w = size[0]; int h = size[1]; if (w < h) { int temp = w; w = h; h = temp; } if (w > maxW) { maxW = w; } if (h > maxH) { maxH = h; } } return maxW * maxH; } } ``` 2. 모의고사 ```java class Solution { public int[] solution(int[] answers) { int[] answer = {}; int[] a = {1, 2, 3, 4, 5}; int[] b = {2, 1, 2, 3, 2, 4, 2, 5}; int[] c = {3, 3, 1, 1, 2, 2, 4, 4, 5, 5}; int[] score = new int[3]; int max = 0; int count = 0; for (int i = 0; i < answers.length; i++) { if (answers[i] == a[i % a.length]) { score[0]++; } if (answers[i] == b[i % b.length]) { score[1]++; } if (answers[i] == c[i % c.length]) { score[2]++; } } for (int i = 0; i < score.length; i++) { if (score[i] > max) { max = score[i]; } } for (int i = 0; i < score.length; i++) { if (score[i] == max) { count++; } } answer = new int[count]; count = 0; for (int i = 0; i < score.length; i++) { if (score[i] == max) { answer[count] = i + 1; count++; } } return answer; } } ```

    Import from clipboard

    Paste your markdown or webpage here...

    Advanced permission required

    Your current role can only read. Ask the system administrator to acquire write and comment permission.

    This team is disabled

    Sorry, this team is disabled. You can't edit this note.

    This note is locked

    Sorry, only owner can edit this note.

    Reach the limit

    Sorry, you've reached the max length this note can be.
    Please reduce the content or divide it to more notes, thank you!

    Import from Gist

    Import from Snippet

    or

    Export to Snippet

    Are you sure?

    Do you really want to delete this note?
    All users will lose their connection.

    Create a note from template

    Create a note from template

    Oops...
    This template has been removed or transferred.
    Upgrade
    All
    • All
    • Team
    No template.

    Create a template

    Upgrade

    Delete template

    Do you really want to delete this template?
    Turn this template into a regular note and keep its content, versions, and comments.

    This page need refresh

    You have an incompatible client version.
    Refresh to update.
    New version available!
    See releases notes here
    Refresh to enjoy new features.
    Your user state has changed.
    Refresh to load new user state.

    Sign in

    Forgot password

    or

    By clicking below, you agree to our terms of service.

    Sign in via Facebook Sign in via Twitter Sign in via GitHub Sign in via Dropbox Sign in with Wallet
    Wallet ( )
    Connect another wallet

    New to HackMD? Sign up

    Help

    • English
    • 中文
    • Français
    • Deutsch
    • 日本語
    • Español
    • Català
    • Ελληνικά
    • Português
    • italiano
    • Türkçe
    • Русский
    • Nederlands
    • hrvatski jezik
    • język polski
    • Українська
    • हिन्दी
    • svenska
    • Esperanto
    • dansk

    Documents

    Help & Tutorial

    How to use Book mode

    Slide Example

    API Docs

    Edit in VSCode

    Install browser extension

    Contacts

    Feedback

    Discord

    Send us email

    Resources

    Releases

    Pricing

    Blog

    Policy

    Terms

    Privacy

    Cheatsheet

    Syntax Example Reference
    # Header Header 基本排版
    - Unordered List
    • Unordered List
    1. Ordered List
    1. Ordered List
    - [ ] Todo List
    • Todo List
    > Blockquote
    Blockquote
    **Bold font** Bold font
    *Italics font* Italics font
    ~~Strikethrough~~ Strikethrough
    19^th^ 19th
    H~2~O H2O
    ++Inserted text++ Inserted text
    ==Marked text== Marked text
    [link text](https:// "title") Link
    ![image alt](https:// "title") Image
    `Code` Code 在筆記中貼入程式碼
    ```javascript
    var i = 0;
    ```
    var i = 0;
    :smile: :smile: Emoji list
    {%youtube youtube_id %} Externals
    $L^aT_eX$ LaTeX
    :::info
    This is a alert area.
    :::

    This is a alert area.

    Versions and GitHub Sync
    Get Full History Access

    • Edit version name
    • Delete

    revision author avatar     named on  

    More Less

    Note content is identical to the latest version.
    Compare
      Choose a version
      No search result
      Version not found
    Sign in to link this note to GitHub
    Learn more
    This note is not linked with GitHub
     

    Feedback

    Submission failed, please try again

    Thanks for your support.

    On a scale of 0-10, how likely is it that you would recommend HackMD to your friends, family or business associates?

    Please give us some advice and help us improve HackMD.

     

    Thanks for your feedback

    Remove version name

    Do you want to remove this version name and description?

    Transfer ownership

    Transfer to
      Warning: is a public team. If you transfer note to this team, everyone on the web can find and read this note.

        Link with GitHub

        Please authorize HackMD on GitHub
        • Please sign in to GitHub and install the HackMD app on your GitHub repo.
        • HackMD links with GitHub through a GitHub App. You can choose which repo to install our App.
        Learn more  Sign in to GitHub

        Push the note to GitHub Push to GitHub Pull a file from GitHub

          Authorize again
         

        Choose which file to push to

        Select repo
        Refresh Authorize more repos
        Select branch
        Select file
        Select branch
        Choose version(s) to push
        • Save a new version and push
        • Choose from existing versions
        Include title and tags
        Available push count

        Pull from GitHub

         
        File from GitHub
        File from HackMD

        GitHub Link Settings

        File linked

        Linked by
        File path
        Last synced branch
        Available push count

        Danger Zone

        Unlink
        You will no longer receive notification when GitHub file changes after unlink.

        Syncing

        Push failed

        Push successfully