Method swap

Java/Perm_Recus.java:27–32

(int[] nums, int i, int j)

}
 
private void swap(int[] nums, int i, int j)
{
    int temp = nums[i];      //temp temporarily holds the value of nums so that i & j values can be exchanged
    nums[i] = nums[j];
    nums[j] = temp;
}