leetcode best solutions how to learning algorithms form the leetcode best solutions https://leetcode.com/problems/third-maximum-number/ open details https://leetcode.com/problems/third-maximum-number/submissions click best line bar, support scrollbar…

Leetcode Solutions Language: javascript c mysql Last updated: 2019-01-04 https://github.com/nusr/leetcode # Problems Solutions Difficulty Acceptance Paid-Only 001 two-sum c,javascript Easy 39.69% No 002 add-two-numbers javascript Medium 30.01% No 007…

136. Single Number -- Easy 解答 相同的数,XOR 等于 0,所以,将所有的数字 XOR 就可以得到只出现一次的数 class Solution { public: int singleNumber(vector<int>& nums) { int s = 0; for(int i = 0; i < nums.size(); i++) { s = s ^ nums[i]; } return s; } }; 参考 LeetCode Problems' So…

852. Peak Index in a Mountain Array -- Easy 方法一:二分查找 int peakIndexInMountainArray(vector<int>& A) { // insert another two elements to avoid out of bound const int INT_MAX_ = 2147483647; const int INT_MIN_ = (-INT_MAX_-1); // insert INT_MIN_ befo…

I found summary of k Sum problem and solutions in leetcode on the Internet. http://www.sigmainfy.com/blog/summary-of-ksum-problems.html…

algorithm & bitwise operation & the best leetcode solutions leetcode 136 single-number the better solution /** * @param {number[]} nums * @return {number} */ var singleNumber = function(nums) { return nums.reduce((sum, i) => sum ^ i, 0); }; //…

Wildcard Matching Implement wildcard pattern matching with support for '?' and '*'. '?' Matches any single character. '*' Matches any sequence of characters (including the empty sequence). The matching should cover the entire input string (not partia…

Surrounded Regions Given a 2D board containing 'X' and 'O', capture all regions surrounded by 'X'. A region is captured by flipping all 'O's into 'X's in that surrounded region. For example, X X X X X O O X X X O X X O X X After running your function…

Counting Bits Given a non negative integer number num. For every numbers i in the range 0 ≤ i ≤ num calculate the number of 1's in their binary representation and return them as an array. Example:For num = 5 you should return [0,1,1,2,1,2]. Follow up…

Add Digits Given a non-negative integer num, repeatedly add all its digits until the result has only one digit. For example: Given num = 38, the process is like: 3 + 8 = 11, 1 + 1 = 2. Since 2 has only one digit, return it. Follow up:Could you do it…