Package 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.<p>Medium</p> <p>The <a href="https://en.wikipedia.org/wiki/Hamming_distance" target="_top">Hamming distance</a> between two integers is the number of positions at which the corresponding bits are different.</p> <p>Given an integer array <code>nums</code>, return <em>the sum of <strong>Hamming distances</strong> between all the pairs of the integers in</em> <code>nums</code>.</p> <p><strong>Example 1:</strong></p> <p><strong>Input:</strong> nums = [4,14,2]</p> <p><strong>Output:</strong> 6</p> <p><strong>Explanation:</strong> 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.</p> <p><strong>Example 2:</strong></p> <p><strong>Input:</strong> nums = [4,14,4]</p> <p><strong>Output:</strong> 4</p> <p><strong>Constraints:</strong></p> <ul> <li><code>1 <= nums.length <= 10⁴</code></li> <li><code>0 <= nums[i] <= 10⁹</code></li> <li>The answer for the given input will fit in a <strong>32-bit</strong> integer.</li> </ul>

Constructor Summary

Constructors

Constructor	Description
Solution()

Method Summary

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

Methods inherited from class java.lang.Object

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

Constructor Details

Solution

public Solution()

Method Details

totalHammingDistance

public int totalHammingDistance(int[] nums)