随笔分类 -  Algorithm

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classic algorithm, problem
LeetCode Add and Search Word - Data structure design
摘要：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 regu... 阅读全文
posted @ 2015-05-27 01:59 卖程序的小歪 阅读(262) 评论(0) 推荐(0)
LeetCode Combination Sum III
摘要：Find all possible combinations ofknumbers that add up to a numbern, given that only numbers from 1 to 9 can be used and each combination should be a u... 阅读全文
posted @ 2015-05-27 01:07 卖程序的小歪 阅读(167) 评论(0) 推荐(0)
LeetCode Contains Duplicate
摘要：Given an array of integers, find if the array contains any duplicates. Your function should return true if any value appears at least twice in the arr... 阅读全文
posted @ 2015-05-27 00:23 卖程序的小歪 阅读(224) 评论(0) 推荐(0)
LeetCode Kth Largest Element in an Array
摘要：Find thekth largest element in an unsorted array. Note that it is the kth largest element in the sorted order, not the kth distinct element.For exampl... 阅读全文
posted @ 2015-05-25 00:01 卖程序的小歪 阅读(196) 评论(0) 推荐(0)
LeetCode SQL: Combine Two Tables
摘要：# Write your MySQL query statement belowSELECT p.FirstName, p.LastName, a.City, a.State FROM Person AS pLEFT JOIN Address AS a ON p.PersonId = a.Perso... 阅读全文
posted @ 2015-05-22 01:16 卖程序的小歪 阅读(146) 评论(0) 推荐(0)
LeetCode SQL:Employees Earning More Than Their Managers
摘要：# Write your MySQL query statement belowSELECT a.Name FROM Employee AS aINNER JOIN Employee AS b ON a.ManagerId = b.IdWHERE a.Salary > b.Salary让我来看看讨论... 阅读全文
posted @ 2015-05-22 01:01 卖程序的小歪 阅读(157) 评论(0) 推荐(0)
LeetCode Minimum Size Subarray Sum
摘要：Given an array ofnpositive integers and a positive integers, find the minimal length of a subarray of which the sum ≥s. If there isn't one, return 0 i... 阅读全文
posted @ 2015-05-14 16:37 卖程序的小歪 阅读(154) 评论(0) 推荐(0)
LeetCode Course Schedule II
摘要：There are a total ofncourses you have to take, labeled from0ton - 1.Some courses may have prerequisites, for example to take course 0 you have to firs... 阅读全文
posted @ 2015-05-14 16:18 卖程序的小歪 阅读(234) 评论(0) 推荐(0)
LeetCode Tries Prefix Tree
摘要：1 class TrieNode { 2 public: 3 const static int NR_FANOUT = 26; 4 TrieNode* child[NR_FANOUT]; 5 int count; 6 // Initialize your data ... 阅读全文
posted @ 2015-05-11 21:18 卖程序的小歪 阅读(296) 评论(0) 推荐(0)
LeetCode Binary Tree Right Side View
摘要：Given a binary tree, imagine yourself standing on therightside of it, return the values of the nodes you can see ordered from top to bottom.For exampl... 阅读全文
posted @ 2015-05-07 08:46 卖程序的小歪 阅读(127) 评论(0) 推荐(0)
LeetCode Isomorphic Strings
摘要：Given two stringssandt, determine if they are isomorphic.Two strings are isomorphic if the characters inscan be replaced to gett.All occurrences of a ... 阅读全文
posted @ 2015-05-07 08:26 卖程序的小歪 阅读(152) 评论(0) 推荐(0)
LeetCode Course Schedule
摘要：There are a total ofncourses you have to take, labeled from0ton - 1.Some courses may have prerequisites, for example to take course 0 you have to firs... 阅读全文
posted @ 2015-05-06 22:30 卖程序的小歪 阅读(374) 评论(0) 推荐(0)
LeetCode Reverse Linked List
摘要：绝对老题了，感觉已经重复了Reverse a singly linked list.click to show more hints.Hint:A linked list can be reversed either iteratively or recursively. Could you imp... 阅读全文
posted @ 2015-05-06 19:37 卖程序的小歪 阅读(159) 评论(0) 推荐(0)
LeetCode Count Primes
摘要：Description:Count the number of prime numbers less than a non-negative number,nclick to show more hints.References:How Many Primes Are There?Sieve of ... 阅读全文
posted @ 2015-04-30 10:42 卖程序的小歪 阅读(202) 评论(0) 推荐(0)
LeetCode Combination Sum
摘要：这题居然没有记录，写一下吧：Given a set of candidate numbers (C) and a target number (T), find all unique combinations inCwhere the candidate numbers sums toT.Thesa... 阅读全文
posted @ 2015-04-25 17:30 卖程序的小歪 阅读(220) 评论(0) 推荐(0)
LeetCode Remove Linked List Elements
摘要：Remove all elements from a linked list of integers that have valueval.ExampleGiven:1 --> 2 --> 6 --> 3 --> 4 --> 5 --> 6,val= 6Return:1 --> 2 --> 3 --... 阅读全文
posted @ 2015-04-25 09:40 卖程序的小歪 阅读(154) 评论(0) 推荐(0)
LeetCode Happy Number
摘要：1 class Solution { 2 public: 3 bool isHappy(int n) { 4 int last = n; 5 6 unordered_set exist; 7 8 do { ... 阅读全文
posted @ 2015-04-22 23:45 卖程序的小歪 阅读(194) 评论(0) 推荐(0)
LeetCode Rotate Array 旋转数组
摘要：这个题居然没有记录。原地旋转数组可以见编程珠玑，在JDK代码中也可以找到(Collections.rotate)，提供了两种方式一种是做三次reverse，还有一种则是进行遍历替换。第一种方式： 1 class Solution { 2 public: 3 void rotate(int n... 阅读全文
posted @ 2015-04-20 11:02 卖程序的小歪 阅读(205) 评论(0) 推荐(0)
LeetCode Repeated DNA Sequences
摘要：1 class Solution { 2 private: 3 char tbl[256]; 4 public: 5 vector findRepeatedDnaSequences(string s) { 6 vector res; 7 8 ... 阅读全文
posted @ 2015-04-19 22:17 卖程序的小歪 阅读(152) 评论(0) 推荐(0)
LeetCode Bitwise AND of Numbers Range
摘要：Given a range [m, n] where 0 >=1; 9 n>>=1;10 }11 return res;12 }13 14 int bitvalue(int m, int n) {15 i... 阅读全文
posted @ 2015-04-16 08:34 卖程序的小歪 阅读(308) 评论(0) 推荐(0)

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