java求助 实在是做到崩溃了5555

awuli纯纯啊 @ 2019-01-17 17:58:00

public static void main(String[] args) {
    Scanner r=new Scanner(System.in);
    int n=r.nextInt();
    String  str="qwe";
    String[] arr = str.split("");
    String mod[]={"a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","x","y","z"};

    for(int i=0;i<3;i++) {
        for(int j=0;j<26;j++) {
            if(arr[i]==mod[j]) {
                if(j+n>=26) arr[i]=mod[j+n-26];
                else arr[i]=mod[j+n];
            }
        }   
    }
}

by t162 @ 2019-01-17 18:03:22

toCharArray()+valueOf()了解一下

by 33028120040712wcl @ 2019-01-17 18:05:17

希望更丰富的展现？使用Markdown

by t162 @ 2019-01-17 18:07:56

用equals()方法。。。==比较的是他们的地址，当然是错的了。。。

by t162 @ 2019-01-17 18:09:51

import java.util.*;

public class Main {

public static void main(String[] args) {
    Scanner r=new Scanner(System.in);
    int n=r.nextInt();
    String  str="qwe";
    String[] arr = str.split("");
    String mod[]={"a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","x","y","z"};

    for(int i=0;i<3;i++) {
        for(int j=0;j<26;j++) {
            if(arr[i].equals(mod[j])) {
                if(j+n>=26) arr[i]=mod[j+n-26];
                else arr[i]=mod[j+n];
            }
        }   
    }
}
}