LeetCode_461. Hamming Distance

Posted 2020-11-24 邓戈麟

 

461. Hamming Distance

Easy

The Hamming distance between two integers is the number of positions at which the corresponding bits are different.

Given two integers x and y, calculate the Hamming distance.

Note:
0 ≤ x, y < 231.

Example:

Input: x = 1, y = 4

Output: 2

Explanation:
1   (0 0 0 1)
4   (0 1 0 0)
       ↑   ↑

The above arrows point to positions where the corresponding bits are different.

 

package leetcode.easy;

public class HammingDistance {
	public int hammingDistance(int x, int y) {
		return Integer.bitCount(x ^ y);
	}

	@org.junit.Test
	public void test() {
		System.out.println(hammingDistance(1, 4));
	}
}