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04 2016 档案

(Array,位操作)137. Single Number II

摘要：Given an array of integers, every element appears three times except for one. Find that single one. Note:Your algorithm should have a linear runtime c 阅读全文

posted @ 2016-04-19 14:00 cKK 阅读(168) 评论(0) 推荐(0)

(Tree) 101. Symmetric Tree

摘要：Given a binary tree, check whether it is a mirror of itself (ie, symmetric around its center). For example, this binary tree is symmetric: But the fol 阅读全文

posted @ 2016-04-12 21:06 cKK 阅读(140) 评论(0) 推荐(0)

(String). Word Pattern

摘要：Given a pattern and a string str, find if str follows the same pattern. Here follow means a full match, such that there is a bijection between a lette 阅读全文

posted @ 2016-04-12 15:26 cKK 阅读(199) 评论(0) 推荐(0)

(Array)121. Best Time to Buy and Sell Stock

摘要：Say you have an array for which the ith element is the price of a given stock on day i. If you were only permitted to complete at most one transaction 阅读全文

posted @ 2016-04-12 02:14 cKK 阅读(108) 评论(0) 推荐(0)

(Array)169. Majority Element

摘要：Given an array of size n, find the majority element. The majority element is the element that appears more than ⌊ n/2 ⌋ times. You may assume that the 阅读全文

posted @ 2016-04-11 23:49 cKK 阅读(121) 评论(0) 推荐(0)

292. Nim Game

摘要：You are playing the following Nim Game with your friend: There is a heap of stones on the table, each time one of you take turns to remove 1 to 3 ston 阅读全文

posted @ 2016-04-11 21:10 cKK 阅读(121) 评论(0) 推荐(0)

（Array）27. Remove Element

摘要：Given an array and a value, remove all instances of that value in place and return the new length. Do not allocate extra space for another array, you 阅读全文

posted @ 2016-04-11 20:03 cKK 阅读(118) 评论(0) 推荐(0)

(DP)3.Longest Substring Without Repeating Characters

摘要：Given a string, find the length of the longest substring without repeating characters. For example, the longest substring without repeating letters fo 阅读全文

posted @ 2016-04-11 02:43 cKK 阅读(139) 评论(0) 推荐(0)

(LinkedList)2. Add Two Numbers

摘要：You are given two linked lists representing two non-negative numbers. The digits are stored in reverse order and each of their nodes contain a single 阅读全文

posted @ 2016-04-11 01:19 cKK 阅读(154) 评论(0) 推荐(0)

(String)151. Reverse Words in a String

摘要：Given an input string, reverse the string word by word. For example,Given s = "the sky is blue",return "blue is sky the". 阅读全文

posted @ 2016-04-10 02:48 cKK 阅读(146) 评论(0) 推荐(0)

(String) 205.Isomorphic Strings

摘要：Given two strings s and t, determine if they are isomorphic. Two strings are isomorphic if the characters in s can be replaced to get t. All occurrenc 阅读全文

posted @ 2016-04-10 02:21 cKK 阅读(191) 评论(0) 推荐(0)

（LinkedList）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: begin to in 阅读全文

posted @ 2016-04-06 15:13 cKK 阅读(171) 评论(0) 推荐(0)

（LinkedList） Remove Linked List Elements

摘要：Remove all elements from a linked list of integers that have value val. ExampleGiven: 1 --> 2 --> 6 --> 3 --> 4 --> 5 --> 6, val = 6Return: 1 --> 2 -- 阅读全文

posted @ 2016-04-06 15:08 cKK 阅读(163) 评论(0) 推荐(0)