swap JAVA code example

Example 1: java array swap

public static void swap(int x, int y, int[] arr) {
  	int temp = arr[x];
  	arr[x] = arr[y];
  	arr[y] = temp;
}

Example 2: swap function java

public static void swap(int[] a, int i, int j){
	int temp = a[i];
  	a[i] = a[j];
  	a[j] = temp;
}

Example 3: java swap variables

// a, b can be a numeric value
a += b; // a = a + b
b = a - b; // b = (a + b) - b = a  ---> b=a
a -= b; // a = (a + b) - (a) = b  ---> a=b