Find two elements in the array that are not repeated

test.java

// Input: 2 1 7 4 5 4 7 1
// Output: 2 5
public void findTwoElements(int[] a) {
  int xor = 0, x = 0, y = 0, rsb;
  
  for (int i = 0; i < a.length; i++) {
    xor = xor ^ a[i]
  }
  
  rsb = xor & ~(xor-1);
  
  for (int i = 0; i < a.length; i++) {
    if (a[i] & rsb == 0) {
      x = x ^ a[i];
    } else {
      y = y ^ a[i];
    } 
  }
  
  System.out.println(x);
  System.out.println(y);
}