原创 c++ list, vector, map, set 區別與用法比較
轉自：http://blog.csdn.net/alex_xhl/article/details/37692297 List封裝了鏈表,Vector封裝了數組, list和vector得最主要的區別在於vector使用連續內存存儲
2020-02-20 21:41:47
原创 Count of Smaller Numbers After Self
You are given an integer array nums and you have to return a new counts array. The counts array has the property where
2020-02-20 21:41:36
原创 198. House Robber-動態規劃
You are a professional robber planning to rob houses along a street. Each
2020-02-20 21:41:36
原创 LeetCode-做題簡記
2016年夏天開始，跟着學校的一個leetcode羣每天做一題。下面記錄下過程中沒來得及做的，或者沒做好的，或者個人覺得得留意下的題目，以備更好的回顧。菜鳥一個~ 未做的題目（有空補上）： 112. Path Sum 241. Diffe
2020-02-20 21:41:36
原创 377. Combination Sum IV-動態規劃
Given an integer array with all positive numbers and no duplicates, find the number of possible combinations that add
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原创 桶排序
http://www.cnblogs.com/kkun/archive/2011/11/23/2260267.html http://www.cnblogs.com/songlee/p/5738142.html http://blo
2020-02-20 21:41:36
原创 First Missing Positive-計數排序/桶排序
Given an unsorted integer array, find the first missing positive integer. For example, Given [1,2,0] return 3, and [3
2020-02-20 21:41:36
原创 389. Find the Difference-hash map/XOR
Given two strings s and t which consist of only lowercase letters. String t is generated by random shuffling string s
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原创 27. Remove Element-two pointers
Given an array and a value, remove all instances of that value in place and return the new length. Do not allocate ex
2020-02-20 21:41:36
原创 172. Factorial Trailing Zeroes
Given an integer n, return the number of trailing zeroes in n!. Note: Your solution should be in logarithmic time com
2020-02-20 21:41:36
原创 Maximum XOR of Two Numbers in an Array--異或、字典樹
Given a non-empty array of numbers, a0, a1, a2, … , an-1, where 0 ≤ ai < 231. Find the maximum result of ai XOR aj,
2020-02-20 21:41:36
原创 100. Same Tree
Given two binary trees, write a function to check if they are equal or not. Two binary trees are considered equal if
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原创 326. Power of Three / 342. Power of Four
326. Power of Three: Given an integer, write a function to determine if it is a power of three. Follow up: Could you
2020-02-20 21:41:36
原创 原碼, 反碼, 補碼 詳解
轉自：http://www.cnblogs.com/zhangziqiu/archive/2011/03/30/ComputerCode.html 本篇文章講解了計算機的原碼, 反碼和補碼. 並且進行了深入探求了爲何要使用反碼和補碼,
2020-02-20 21:41:36
原创 387. First Unique Character in a String
Given a string, find the first non-repeating character in it and return it's index. If it doesn't exist, return -1. E
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