Question

该程序的目的是以大写字母输出/替换字符串的常用字母。 INPUT：它应该输出的计算机程序：cOMPuteR PROgRaM

  public static void main(String[] args) 

{
    Scanner x =new Scanner( System.in);
    String input="";

    System.out.print("Input two words:");
    input= x.nextLine();
        String[] array = input.split(" ");
        String stringa = array[0]; 
        String stringb = array[1];


     char[] first = stringa.toCharArray();
      char[] second = stringb.toCharArray();

      for (int i = 0, max = Math.min(first.length, second.length); i < max; i++) {
        char c = first[i];
        if (c == second[i]) 
        {
          c = Character.toUpperCase(c);
          first[i] = c;
          second[i] = c;
        }
      }

      System.out.println(new String(first));
      System.out.println(new String(second));


}

Answer 1

String[] array = input.split(" ");
String stringa = array[0]; 
String stringb = array[1];

char[] a = stringa.toCharArray();

for(char c : a){
String cStr = String.valueOf(c);
int i = stringb.indexOf(cStr)
stringb[i] = cStr.toUpperCase();
}

Answer 2

为每个字符串创建一个char数组（char[]）。然后使用位置索引迭代字符。如果每个String中位置索引处的字符相同，则更新两者中的char。最后打印数组（String以获得清晰易读的内容）。

public static void main(String[] args) {
  char[] first = args[0].toCharArray();
  char[] second = args[2].toCharArray();

  for (int i = 0, max = Math.min(first.length(), second.length()); i < max; i++) {
    char c = first[i];
    if (c == second[i]) {
      c = Character.toUpperCase(c);
      first[i] = c;
      second[i] = c;
    }
  }
  System.out.println(new String(first));
  System.out.println(new String(second));
}

在澄清您的问题之后，这里的代码应该有效：

public static void main (String[] args) {
  args = new String[] {"godi","doge"};
  char[] first = args[0].toCharArray();
  char[] second = args[1].toCharArray();

  for (int i = 0; i < first.length; i++) {
    char c = first[i];
    char upper = Character.toUpperCase(c);
    boolean changed = false;
    for (int j = 0; j < second.length; j++) {
        if (second[j] == c) {
            second[j] = upper;
            changed = true;
        }
    }
    if (changed) {
        for (int j = 0; j < first.length; j++) {
            if (first[j] == c) {
                first[j] = upper;
            }
        }
    }
  }
  System.out.println(new String(first));
  System.out.println(new String(second));
}

java中用大写字母表示两个字符串的常用字符/字母

2 个答案: