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Articles tagged with #leetcode
Question Suppose an array of length n sorted in ascending order is rotated between 1 and n times. For example, the array nums = [0,1,2,4,5,6,7] might become: [4,5,6,7,0,1,2] if it was rotated 4 times. [0,1,2,4,5,6,7] if it was rotated 7 times. No...
class Solution { public: int missingNumber(vector<int>& nums) { int result = nums.size(); for (int i = 0; i < nums.size(); i++) { result ^= i ^ nums[i]; } return result; } }; Question Given an ar...
Problem Overview Given an integer n, return an array ans of length n + 1 where ans[i] is the number of set bits in the binary representation of i. Example: n = 5 → Output: [0, 1, 1, 2, 1, 2] Constraints: 0 <= n <= 10^5 Solution 1: Brute Force Thi...
Problem Overview The goal is to write a function that takes an unsigned integer and returns the number of ‘1’ bits it has in its binary representation. This value is also known as Hamming weight. This is the classic bit manipulation problem. Solution...
