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问题描述

假设A = 1,B = 2,C = 3

如果我输入ABC,输出应该是123而是333,因为java只读取最后一个char.Below是我的代码。任何asap帮助将不胜感激thx。



我尝试过:



Assume A=1,B=2, C=3
If i input ABC, the output should be 123 but instead 333 because java only reads the last char.Below is my code. Any asap help would be appreciated thx.

What I have tried:

public static void main(String[] args) {
        // TODO code application logic here
        Scanner input = new Scanner(System.in);
        System.out.println("Please enter a 10 character word:");
        String a = input.nextLine();
        String letters = a.substring(0,3);
        char letter[] = letters.toCharArray();

        for(int i=0;i<letter.length;i++){
         for(char c: letter){
             switch(c){
                 case 'A':case'B': case 'C': case 'a': case'b': case 'c': letter[i]='0';break;
                 case 'D':case'E': case 'F': case 'd': case'e': case 'f': letter[i]='1';break;
                 case 'G':case'H':case'I':case'g':case'i':case'h':letter[i]='2';break;
                 case 'J':case'K':case'L':case'j':case'k':case'l':letter[i]='3';break;
                 case 'M':case'N':case'O':case'm':case'n':case'o':letter[i]='4';break;
                 case 'P':case'Q':case'R':case'p':case'q':case'r':letter[i]='5';break;
                 case 'S':case'T':case's':case't':letter[i]='6';break;
                 case 'U':case'V':case'u':case'v':letter[i]='7';break;
                 case 'W':case'X':case'w':case'x':letter[i]='8';break;
                 case 'Y':case'Z':case'y':case'z':letter[i]='9';break;
             }
         }
         System.out.print(letter[i]);
        }System.out.println();



           }

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08-11 18:57