LeetCode - 随笔分类 - zengzy

Combination Sum,Combination Sum II,Combination Sum III

摘要：39. Combination Sum Given a set of candidate numbers (C) and a target number (T), find all unique combinations in C where the candidate numbers sums t 阅读全文

posted @ 2016-02-18 17:28 zengzy 阅读(427) 评论(0) 推荐(0)

Contains Duplicate,Contains Duplicate II,Contains Duplicate III

摘要：217. Contains Duplicate Given an array of integers, find if the array contains any duplicates. Your function should return true if any value appears a 阅读全文

posted @ 2016-02-16 12:00 zengzy 阅读(502) 评论(0) 推荐(0)

简单的LRU Cache设计与实现

摘要：要求：设计并实现一个LRU缓存的数据结构，支持get和set操作 get(key)：若缓存中存在key，返回对应的value，否则返回-1 set(key,value):若缓存中存在key，替换其value，否则插入key及其value，如果插入时缓存已经满了，应该使用LRU算法把最近最久没有使用阅读全文

posted @ 2016-01-29 01:45 zengzy 阅读(9458) 评论(0) 推荐(0)

Coin Change

摘要：322. Coin ChangeTotal Accepted:4182Total Submissions:16210Difficulty:MediumYou are given coins of different denominations and a total amount of moneya... 阅读全文

posted @ 2016-01-05 18:49 zengzy 阅读(339) 评论(0) 推荐(1)

Peeking Iterator

摘要：284. Peeking IteratorTotal Accepted:12043Total Submissions:37257Difficulty:MediumGiven an Iterator class interface with methods:next()andhasNext(), de... 阅读全文

posted @ 2016-01-05 18:10 zengzy 阅读(200) 评论(0) 推荐(1)

Bulb Switcher

摘要：319. Bulb SwitcherTotal Accepted:976Total Submissions:2611Difficulty:MediumThere arenbulbs that are initially off. You first turn on all the bulbs. Th... 阅读全文

posted @ 2015-12-20 21:05 zengzy 阅读(250) 评论(0) 推荐(1)

70. Climbing Stairs

摘要：70. Climbing StairsTotal Accepted:84498Total Submissions:237744Difficulty:EasyYou are climbing a stair case. It takesnsteps to reach to the top.Each t... 阅读全文

posted @ 2015-12-20 11:26 zengzy 阅读(219) 评论(2) 推荐(1)

198. House Robber,213. House Robber II

摘要：198. House RobberTotal Accepted:45873Total Submissions:142855Difficulty:EasyYou are a professional robber planning to rob houses along a street. Each ... 阅读全文

posted @ 2015-12-20 11:21 zengzy 阅读(255) 评论(0) 推荐(1)

303. Range Sum Query - Immutable

摘要：303. Range Sum Query - ImmutableTotal Accepted:10632Total Submissions:44726Difficulty:EasyGiven an integer arraynums, find the sum of the elements bet... 阅读全文

posted @ 2015-12-20 10:59 zengzy 阅读(204) 评论(0) 推荐(1)

89. Gray Code

摘要：89. Gray CodeTotal Accepted:49119Total Submissions:142633Difficulty:MediumThe gray code is a binary numeral system where two successive values differ ... 阅读全文

posted @ 2015-12-20 10:48 zengzy 阅读(200) 评论(0) 推荐(1)

22. Generate Parentheses

摘要：22. Generate ParenthesesTotal Accepted:70039Total Submissions:203043Difficulty:MediumGivennpairs of parentheses, write a function to generate all comb... 阅读全文

posted @ 2015-12-19 21:34 zengzy 阅读(134) 评论(0) 推荐(0)

Remove Duplicate Letters

摘要：316. Remove Duplicate LettersTotal Accepted:2367Total Submissions:12388Difficulty:MediumGiven a string which contains only lowercase letters, remove d... 阅读全文

posted @ 2015-12-19 20:17 zengzy 阅读(232) 评论(0) 推荐(1)

155. Min Stack

摘要：155. Min StackTotal Accepted:54402Total Submissions:259750Difficulty:EasyDesign a stack that supports push, pop, top, and retrieving the minimum eleme... 阅读全文

posted @ 2015-12-19 16:50 zengzy 阅读(139) 评论(0) 推荐(1)

232. Implement Queue using Stacks,225. Implement Stack using Queues

摘要：232. Implement Queue using StacksTotal Accepted:27024Total Submissions:79793Difficulty:EasyImplement the following operations of a queue using stacks.... 阅读全文

posted @ 2015-12-19 16:32 zengzy 阅读(159) 评论(0) 推荐(1)

Different Ways to Add Parentheses

摘要：241. Different Ways to Add ParenthesesTotal Accepted:13500Total Submissions:43882Difficulty:MediumGiven a string of numbers and operators, return all ... 阅读全文

posted @ 2015-12-19 16:07 zengzy 阅读(197) 评论(0) 推荐(0)

233. Number of Digit One

摘要：233. Number of Digit OneTotal Accepted:13442Total Submissions:59263Difficulty:MediumGiven an integer n, count the total number of digit 1 appearing in... 阅读全文

posted @ 2015-12-19 14:27 zengzy 阅读(141) 评论(0) 推荐(1)

Permutation Sequence

摘要：Permutation SequenceTotal Accepted:44618Total Submissions:187104Difficulty:MediumThe set[1,2,3,…,n]contains a total ofn! unique permutations.By listin... 阅读全文

posted @ 2015-12-18 23:57 zengzy 阅读(140) 评论(0) 推荐(0)

Perfect Squares

摘要：Perfect SquaresTotal Accepted:18854Total Submissions:63048Difficulty:MediumGiven a positive integern, find the least number of perfect square numbers ... 阅读全文

posted @ 2015-12-18 19:48 zengzy 阅读(200) 评论(0) 推荐(0)

Factorial Trailing Zeroes

摘要：Factorial Trailing ZeroesTotal Accepted:44612Total Submissions:144778Difficulty:EasyGiven an integern, return the number of trailing zeroes inn!.Note:... 阅读全文

posted @ 2015-12-18 18:38 zengzy 阅读(132) 评论(0) 推荐(1)

Excel Sheet Column Title

摘要：Excel Sheet Column TitleTotal Accepted:45878Total Submissions:230128Difficulty:EasyGiven a positive integer, return its corresponding column title as ... 阅读全文

posted @ 2015-12-18 18:06 zengzy 阅读(149) 评论(0) 推荐(0)

随笔分类 - LeetCode

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