随笔分类 -  leetcode

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leetcode------Gray Code
摘要：标题：Gray Code通过率：32.4%难度：中等The gray code is a binary numeral system where two successive values differ in only one bit.Given a non-negative integernrep... 阅读全文
posted @ 2015-02-06 15:54 pku_smile 阅读(234) 评论(0) 推荐(0)
leetcode------Letter Combinations of a Phone Number
摘要：---恢复内容开始---标题：Letter Combinations of a Phone Number通过率：26.6%难度：中等Given a digit string, return all possible letter combinations that the number could ... 阅读全文
posted @ 2015-02-05 11:27 pku_smile 阅读(270) 评论(0) 推荐(0)
leetcode------Best Time to Buy and Sell Stock II
摘要：标题：Best Time to Buy and Sell Stock II通过率：37.3%难度：中等Say you have an array for which theithelement is the price of a given stock on dayi.Design an algor... 阅读全文
posted @ 2015-02-02 11:02 pku_smile 阅读(178) 评论(0) 推荐(0)
leetcode------Best Time to Buy and Sell Stock
摘要：标题：Best Time to Buy and Sell Stock通过率：32%难度：中等Say you have an array for which theithelement is the price of a given stock on dayi.If you were only per... 阅读全文
posted @ 2015-02-02 10:56 pku_smile 阅读(223) 评论(0) 推荐(0)
leetcode------Spiral Matrix II
摘要：标题:Spiral Matrix II通过率：31.3难度：中等Given an integern, generate a square matrix filled with elements from 1 ton2in spiral order.For example,Givenn=3,You s... 阅读全文
posted @ 2015-02-01 11:27 pku_smile 阅读(199) 评论(0) 推荐(0)
leetcode------ZigZag Conversion
摘要：标题：ZigZag Conversion通过率：22.7%难度：简单The string"PAYPALISHIRING"is written in a zigzag pattern on a given number of rows like this: (you may want to displ... 阅读全文
posted @ 2015-01-28 13:38 pku_smile 阅读(189) 评论(0) 推荐(0)
leetcode------Add Binary
摘要：标题：Add Binary通过率：25.1%难度：简单Given two binary strings, return their sum (also a binary string).For example,a ="11"b ="1"Return"100".本题主要就是模拟二进制去处理，跟上次做到... 阅读全文
posted @ 2015-01-27 17:39 pku_smile 阅读(135) 评论(0) 推荐(0)
leetcode------Count and Say
摘要：标题：Count and Say通过率：25.8%难度：简单The count-and-say sequence is the sequence of integers beginning as follows:1, 11, 21, 1211, 111221, ...1is read off as"... 阅读全文
posted @ 2015-01-27 17:20 pku_smile 阅读(143) 评论(0) 推荐(0)
leetcode------Valid Sudoku
摘要：标题：Valid Sudoku通过率:27.2%难度：简单Determine if a Sudoku is valid, according to:Sudoku Puzzles - The Rules.The Sudoku board could be partially filled, where... 阅读全文
posted @ 2015-01-26 18:03 pku_smile 阅读(165) 评论(0) 推荐(0)
leetcode------Intersection of Two Linked Lists
摘要：Write a program to find the node at which the intersection of two singly linked lists begins.For example, the following two linked lists:A: a... 阅读全文
posted @ 2015-01-25 11:40 pku_smile 阅读(154) 评论(0) 推荐(0)
leetcode------Remove Nth Node From End of List
摘要：标题：Remove Nth Node From End of List通过率：28.5%难度：简答Given a linked list, remove thenthnode from the end of list and return its head.For example, Given ... 阅读全文
posted @ 2015-01-23 11:23 pku_smile 阅读(147) 评论(0) 推荐(0)
leetcode------Implement strStr()
摘要：标题：Implement strStr()通过率：21.8%难度：简单Implement strStr().Returns the index of the first occurrence of needle in haystack, or -1 if needle is not part of ... 阅读全文
posted @ 2015-01-23 11:12 pku_smile 阅读(158) 评论(0) 推荐(0)
leetcode------Pascal's Triangle II
摘要：标题：Pascal's Triangle II通过率：29.8%难度：简单Given an indexk, return thekthrow of the Pascal's triangle.For example, givenk= 3,Return[1,3,3,1].Note:Could you ... 阅读全文
posted @ 2015-01-21 10:51 pku_smile 阅读(162) 评论(0) 推荐(0)
leetcode------Valid Palindrome
摘要：标题：Valid Palindrome通过率：21.9%难度：简单Given a string, determine if it is a palindrome, considering only alphanumeric characters and ignoring cases.For exam... 阅读全文
posted @ 2015-01-21 09:59 pku_smile 阅读(130) 评论(0) 推荐(0)
leetcode------Length of Last Word
摘要：标题：Length of Last Word通过率：28.8%难度：简单Given a stringsconsists of upper/lower-case alphabets and empty space characters' ', return the length of last wor... 阅读全文
posted @ 2015-01-20 15:44 pku_smile 阅读(182) 评论(0) 推荐(0)
leetcode------Excel Sheet Column Title
摘要：标题：Excel Sheet Column Title通过率：17.3%难度：简单Given a positive integer, return its corresponding column title as appear in an Excel sheet.For example: 1... 阅读全文
posted @ 2015-01-19 19:22 pku_smile 阅读(202) 评论(0) 推荐(0)
leetcode------Palindrome Number
摘要：标题：Palindrome Number通过率：29.1%难度：简单Determine whether an integer is a palindrome. Do this without extra space. 这个题没有理解是因为单词不认识，然后就是不知道什么是回文数，翻译一下，百度一下才... 阅读全文
posted @ 2015-01-19 18:14 pku_smile 阅读(162) 评论(0) 推荐(0)
leetcode------Minimum Depth of Binary Tree
摘要：标题：Minimum Depth of Binary Tree通过率：29.2%难度：简单Given a binary tree, find its minimum depth.The minimum depth is the number of nodes along the shortest p... 阅读全文
posted @ 2015-01-18 13:49 pku_smile 阅读(181) 评论(0) 推荐(0)
leetcode------Binary Tree Level Order Traversal II
摘要：标题：Binary Tree Level Order Traversal II通过率：30.5%难度：简单Given a binary tree, return thebottom-up level ordertraversal of its nodes' values. (ie, from lef... 阅读全文
posted @ 2015-01-18 11:49 pku_smile 阅读(146) 评论(0) 推荐(0)
leetcode------Plus One
摘要：标题：Valid Parentheses通过率：27.7%难度：简单Given a string containing just the characters'(',')','{','}','['and']', determine if the input string is valid.The b... 阅读全文
posted @ 2015-01-18 11:43 pku_smile 阅读(191) 评论(0) 推荐(0)

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