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题目描述 出处https://leetcode.com/problems/merge-k-sorted-lists/description/Merge k sorted linked lists and return it as one sorted list. Analyze and describe its complexity.Example: Input: ...

目录题目描述分析最终结果题目描述出处 https://leetcode.com/problems/minimum-path-sum/Given a m x n grid filled with non-negative numbers, find a path from top left to bottom right which minimizes the sum of all num...

目录题目描述分析最终结果题目描述出处 https://leetcode.com/problems/longest-valid-parentheses/Given a string containing just the characters ‘(’ and ‘)’, find the length of the longest valid (well-formed) parenthese...

目录题目描述分析最终结果题目描述出处 https://leetcode.com/problems/remove-duplicate-letters/Given a string which contains only lowercase letters, remove duplicate letters so that every letter appear once and only ...

目录题目描述分析最终结果题目描述出处 https://leetcode.com/problems/jump-game/description/Given an array of non-negative integers, you are initially positioned at the first index of the array.Each element in the a...

目录题目描述分析最终结果题目描述出处 https://leetcode.com/problems/gas-stationThere are N gas stations along a circular route, where the amount of gas at station i is gas[i].You have a car with an unlimited gas t...

目录题目描述分析最终结果题目描述出处 https://leetcode.com/problems/edit-distance/Given two words word1 and word2, find the minimum number of operations required to convert word1 to word2.You have the following 3 ...

题目描述 出处https://leetcode.com/problems/count-of-smaller-numbers-after-self/description/You are given an integer array nums and you have to return a new counts array. The counts array has the prop...

目录题目描述分析最终结果题目描述出处 https://leetcode.com/problems/minimum-height-trees/description/For a undirected graph with tree characteristics, we can choose any node as the root. The result graph is then a ...

目录题目描述分析最终结果题目描述出处 https://leetcode.com/problems/course-schedule/description/There are a total of n courses you have to take, labeled from 0 to n-1.Some courses may have prerequisites, for examp...

目录题目描述分析最终结果题目描述出处 https://leetcode.com/problems/unique-paths-ii/A robot is located at the top-left corner of a m x n grid (marked ‘Start’ in the diagram below).The robot can only move either do...

目录题目描述分析最终结果题目描述出处 https://leetcode.com/problems/course-schedule-ii/description/There are a total of n courses you have to take, labeled from 0 to n-1.Some courses may have prerequisites, for ex...

目录题目描述分析最终结果题目描述出处 https://leetcode.com/problems/couples-holding-hands/description/N couples sit in 2N seats arranged in a row and want to hold hands. We want to know the minimum number of swaps ...

Leetcode 2 Add Two Numbers题目描述You are given two non-empty linked lists representing two non-negative integers. The digits are stored in reverse order and each of their nodes contain a single dig...

Leetcode 3 Longest Substring Without Repeating Characters题目描述 出处：https://leetcode.com/problems/longest-substring-without-repeating-charactersGiven a string, find the length of the longest s...