swap function java

1public static void swap(int[] a, int i, int j){
2	int temp = a[i];
3  	a[i] = a[j];
4  	a[j] = temp;
5}

1// a, b can be a numeric value
2a += b; // a = a + b
3b = a - b; // b = (a + b) - b = a  ---> b=a
4a -= b; // a = (a + b) - (a) = b  ---> a=b

1Swapping