g0401_0500.s0477_total_hamming_distance

Class Solution

java.lang.Object

g0401_0500.s0477_total_hamming_distance.Solution

public class Solution
extends Object

477 - Total Hamming Distance.

Medium

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

Given an integer array nums, return the sum of Hamming distances between all the pairs of the integers in nums.

Example 1:

Input: nums = [4,14,2]

Output: 6

Explanation: In binary representation, the 4 is 0100, 14 is 1110, and 2 is 0010 (just showing the four bits relevant in this case). The answer will be: HammingDistance(4, 14) + HammingDistance(4, 2) + HammingDistance(14, 2) = 2 + 2 + 2 = 6.

Example 2:

Input: nums = [4,14,4]

Output: 4

Constraints:

• 1 <= nums.length <= 104
• 0 <= nums[i] <= 109
• The answer for the given input will fit in a 32-bit integer.

Constructor Summary

Constructors

Constructor and Description
Solution()

Method Summary

Modifier and Type	Method and Description
int	totalHammingDistance(int[] nums)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Solution

public Solution()

Method Detail

totalHammingDistance

public int totalHammingDistance(int[] nums)