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我正在使用shellort从输入文件中查找总体。为什么我得到StringIndexOutOfBoundsException:字符串索引超出范围:65
这里是我的代码:
package assignment.pkg3;
import java.io.*;
import java.util.*;
public class Sorting{
public static void main (String[] args) throws IOException
{
String[] countryArray = new String[238];
String [] newStringArray = new String [238];
Scanner stdIn = new Scanner(new File("C:\\Users\\talls_000\\Downloads\\CountryUnsortedFormat.txt"));
//reads the file into the array
while(stdIn.hasNext())
{
for (int i = 0; i < countryArray.length; i++)
{
countryArray[i] = stdIn.nextLine();
}//end for
}
int j;
int high = 65;
String temp;
//temp=countryArray[ i ].substring(50, 65);
for(int gap = countryArray.length/2; gap > 0; gap /= 2)
{
for(int i = gap; i < countryArray.length; i++)
{
temp=countryArray[ i ].substring(50,high);
for(j = i; j >= gap && temp.compareTo(countryArray[ j - gap ]) < 0; j -= gap)
{
countryArray[ j ] = countryArray[ j - gap ];
countryArray[ j ] = temp;
}
}
}
for (int i = 0; i < countryArray.length; i++)
{
System.out.println(countryArray[i]);
}//end for
}
}
我收到线33上的错误:temp=countryArray[ i ].substring(50,high);
Exception in thread "main" java.lang.StringIndexOutOfBoundsException: String index out of range: 65
at java.lang.String.substring(String.java:1950)
at assignment.pkg3.Sorting.main(Sorting.java:33)
如果我改变50-0它的工作原理,但我需要从点50取。 为什么我得到这个错误?
因为你没有学会制作[mcve]。仔细阅读该页面。当你有,检查所有相关的职位相同的标题那里---------------> – Tunaki
可能重复的[StringIndexOutOfBoundsException](http://stackoverflow.com/questions/7505947/的StringIndexOutOfBoundsException) – ochi