swap values in array

Question

import java.util.Arrays;

public class Solution{

public static void main(String[] args){

for(int x:swapValues(new int[]{111,77,88,44,32,11,13,25,44}))
System.out.print(x+" ");
}

public static int[] swapValues(int[] a){
int temp;
for(int i=0;i<a.length;i=i+2){

temp=a[i];
a[i]=a[i+1];
a[i+1]=temp;

}
return a;
}

}

when I run the code it shows ArrayIndexOutOfBoundsException
how to solve it?

Answer 1

Change loop to:

for(int i=1;i<a.length;i++){
temp=a[i-1];
a[i-1]=a[i];
a[i]=temp;
}