Compare two numbers

Write a method which finds the maximum of two numbers.You should not use if-else or any other comparison operator.
EXAMPLE
Input: 5, 10
Output: 10 

This is such an easy problem except you cannot use anything you can think of.
Let c = a - b, then the larger number between a and b = a + k * c where k = 0 if a is the larger one and k = 1 if b is the larger one. Now we need some help from the bits. If a number is negative, we know the 32nd bit of the number is 1, otherwise, it is 0. So the problem becomes find the most significant bit k of c = a - b and return max = a + k*c.

public static int getMax(int a, int b){
  int c = a - b;
  //the 32nd bit is 1 if the number is negative, 0 if positive
  int k = (c >> 31) & 1;
  int max = a - k * c;
  return max;
 }