就是借用字典的key-value进行的匹配,算法复杂度仅为O(n) 然后还看到了这个 1classSolution(object):2deftwoSum(self, nums, target):34forind, numinenumerate(nums):5iftarget-numinnumsandnums.index(target-num) !=ind:6return[ind, nums.index
class Solution: def maxNumber(self, nums1, nums2, k): def pick_max(nums, k): stack = [] drop = len(nums) - k for num in nums: while drop and stack and stack[-1] < num: stack.pop() drop -= 1 stack.append(num) return stack[:k] def merge(A, B): ans = [] while A...
Number Theory70 Monotonic Stack68 Segment Tree63 Trie57 Combinatorics54 Bitmask52 Queue48 Divide and Conquer48 Recursion47 Binary Indexed Tree43 Memoization42 Hash Function40 Geometry40 Binary Search Tree40 String Matching37 Topological Sort36 Shortest Path34 Rolling Hash31 Game Theory28 Interactive23 Da...
Given nums = [2, 7, 11, 15], target = 9, Because nums[0] + nums[1] = 2 + 7 = 9, return [0, 1]. 先放代码: #include <iostream>#include<vector>#include<algorithm>#include<numeric>usingnamespacestd;classSolution {public: vector<int> twoSum(vector<int>& nums,inttarget) {intst...
(1, 1); // 缓存是 {1=1} lRUCache.put(2, 2); // 缓存是 {1=1, 2=2} lRUCache.get(1); // 返回 1 lRUCache.put(3, 3); // 该操作会使得关键字 2 作废,缓存是 {1=1, 3=3} lRUCache.get(2); // 返回 -1 (未找到) lRUCache.put(4, 4); // 该操作会使得关键字 1 ...
该题的中文版网址为: leetcode-cn.com/problem,将代码语言选为C#,则默认的接口代码如下: public class Solution { public int SingleNumber(int[] nums) { } } 选项1: VS本地Debug + 在线验证后提交 在本地Visual Studio中创建 .NET Core/Framework 项目 将所生成项目中的 Program.cs中class Program改为...
/** * @param {number} a * @param {number} b * @return {number} */ var add = function(a, b) { let sum = a ^ b; let carry = a & b; while(carry != 0){ carry <<= 1; a = sum; b = carry; sum = a ^ b; carry = a & b; } return sum; }; 参考: https://l...
Given n points on a 2D plane, find the maximum number of points that lie on the same straight line. 题意 给定一个二维平面,平面上有 n 个点,求最多有多少个点在同一条直线上。 样例 解题 https://blog.csdn.net/qq_17550379/article/details/83035798 ...
At the beginning, I implemented aO(N∗N∗logN)algortihm for the last problem,Nis about3500. Problem link:https://leetcode-cn.com/problems/number-of-ways-to-separate-numbers/ But unfortunately, I got "Time Limit Exceeded" result from judging system, it showed that "256/256 cases are ...
Output:[0,1,1,1,2,2] Assumptions: You are not suppose to use the library’s sort function for this problem. Day 1342 答案揭晓 DS Interview Question & Answer What is Principal Component Analysis? What are its appl...