Question

我一直在用我的代码获取此错误“线程主java.lang.stringindexoutofboundsexception中的异常字符串索引超出范围”我无法弄清楚问题是什么？

import java.util.Scanner;
public class Compress { 

public static void main(String[] args)  
{ 
    Scanner scan = new Scanner(System.in);
    System.out.println("Enter a string: "); 
    String compress = scan.nextLine();
    int count = 0; 

    for (count = 0; count <= compress.length(); count++) 
    { 
        while( count +1  < compress.length() && compress.charAt(count) == compress.charAt(count      + 1)) 
    { 
            count = count + 1; 
        } 
        System.out.print(count + "" + compress.charAt(count)); 

   }     
}

Answer 1

字符串索引从0运行到length - 1，因此您正在运行字符串compress的末尾。从

更改for循环条件

for (count = 0; count <= compress.length(); count++)

到

for (count = 0; count < compress.length(); count++)

这样，当count到达compress.length()时，for循环会在使用该索引之前停止。

Answer 2

指数范围为0 to length-1。尝试使用： -

for (count = 0; count < compress.length(); count++)

而不是

for (count = 0; count <= compress.length(); count++)

字符串索引超出范围？

2 个答案: