編寫一個Java程序重複一次字符串100次，但隨機添加8個唯一的拼寫錯誤字符串

Question

對學齡兒童的一個常見處罰是多次寫出一個句子。編寫一個Java獨立程序，它會將下面的句子寫出一百遍：「我永遠不會再次給我的朋友發送垃圾郵件。」你的程序應該爲每個句子編號，它應該做八個不同的隨機錯字。

這就是我到目前爲止所能做到的。無法一起去。

public class Punishment { 

    public static void textgen(int x) { 
     System.out.println(x + ") I will never spam my friends again"); 
    } 

    public static void main(String[] args) { 
     String a = "I will ever spam my friends again."; 
     String b = " will never spam my friends again."; 
     String c = "I will neer spam my friends again."; 
     String d = "I will never pam my friends again."; 
     String e = "I will never spam my riends again."; 
     String f = "I will never spam my friends gain."; 
     String g = "I will never spam y friends again."; 
     String h = "I will never sam my friends agn."; 

     String typos[] = {a,b,c,d,e,f,g,h}; 
     int[] exitng = new int[8]; 

     ArrayList<Integer> list = new ArrayList<Integer>(); 
     for (int i=1; i<=100; i++){ 
      list.add(new Integer(i)); 
     } 
     Collections.shuffle(list); 
     for (int i=0; i<8; i++){ 
      exitng[i] = list.get(i); 
      System.out.println(list.get(i)+")- "+typos[i]); 
     } 

     for (int i = 1; i <= 100; i++) { 
      textgen(i); 
     } 
    } 
} 

這裏有一個想法：

// initialize result without typos 
String[] sentences = new String[100]; 
Arrays.fill(sentences, "I will never spam my friends again."); 

// generate 8 unique typo indexes 
Set<Integer> typoIndexes = new HashSet<>(); 
while (typoIndexes.size() < 8) { 
    typoIndexes.add(Math.random() * 100); 
} 

// create a typo at each typo index 
for(int index : typoIndexes) { 
    StringBuilder sb = new StringBuilder(sentences[index]); 
    char char1 = char2 = char1; 
    int pos1, pos2; 
    while (char1 != char2) { 
     pos1 = Math.random(sb.length()); 
     char1 = sb.charAt(pos1); 
     pos2 = Math.random(sb.length()); 
     char2 = sb.charAt(pos2); 
    } 
    sb.setCharAt(pos1, char2); 
    sb.setCharAt(pos2, char1); 
    sentences[index] = sb.toString(); 
} 

注：未編譯的，未經檢驗

Answer 1

• 有錯別字增加8句到您的數組或列表
• 添加正確的句子的其餘
• 洗牌整個陣列或列表
• 個打印元件

Answer 2

UPDATE

您應該實現的功能，產生8個隨機句子，拼寫錯誤，而不是預製它們與你的老師得分更好。

---

嗯，這是一種像@Pschemo，但這裏有雲：

public static void main(String[] args) { 
    String a = "I will ever spam my friends again."; 
    String b = " will never spam my friends again."; 
    String c = "I will neer spam my friends again."; 
    String d = "I will never pam my friends again."; 
    String e = "I will never spam my riends again."; 
    String f = "I will never spam my friends gain."; 
    String g = "I will never spam y friends again."; 
    String h = "I will never sam my friends agn."; 

    List<String> l = new ArrayList<>(); 

    // Add the right sentence 92 time. 
    for (int i = 0; i < 92; i++) { 
     l.add("I will never spam my friends again."); 
    } 

    // Add 8 different typo sentences. 
    l.add(a); 
    l.add(b); 
    l.add(c); 
    l.add(d); 
    l.add(e); 
    l.add(f); 
    l.add(g); 
    l.add(h); 

    // Shuffle and print. 
    Collections.shuffle(l); 

    int i = 1; 
    for (String s: l) { 
     System.out.println(String.format("%d) %s", i++, s)); 
    } 
}