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LeetCode

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全部文章 / LeetCode （共33篇）

565. Array Nesting

A zero-indexed array A of length N contains all integers from 0 to N-1. Find and return the longest length of set S, where S[i] = {A[i], A[A[i]], A[A[...

2019-05-27

0 520

457. Circular Array Loop

You are given a circular array nums of positive and negative integers. If a number k at an index is positive, then move forward k steps. Conversely, i...

LeetCode

2019-05-09

0 581

442. Find All Duplicates in an Array

Given an array of integers, 1 ≤ a[i] ≤ n (n = size of array), some elements appear twice and others appear once. Find all the elements that appear tw...

2019-05-06

0 576

289. Game of Life

According to the Wikipedia's article: "The Game of Life, also known simply as Life, is a cellular automaton devised by the British mathematician ...

2019-05-06

0 617

215. Kth Largest Element in an Array

Find the kth largest element in an unsorted array. Note that it is the kth largest element in the sorted order, not the kth distinct element. Example...

2019-04-30

0 613

214. Shortest Palindrome

待续。。。找时间攻克KMP算法。。。

2019-04-29

0 480

212. Word Search II

Given a 2D board and a list of words from the dictionary, find all words in the board. Each word must be constructed from letters of sequentially adj...

2019-04-29

0 593

211. Add and Search Word - Data structure design

Design a data structure that supports the following two operations: void addWord(word) bool search(word) search(word) can search a literal word or a ...

2019-04-29

0 512

210. Course Schedule II

There are a total of n courses you have to take, labeled from 0 to n-1. Some courses may have prerequisites, for example to take course 0 you have to...

2019-04-29

0 556

208. Implement Trie (Prefix Tree)

Implement a trie with insert, search, and startsWith methods. Example: Trie trie = new Trie(); trie.insert("apple"); trie.search("ap...

2019-04-29

0 661