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Complete the Word CodeForces - 716B
ZS the Coder loves to read the dictionary. He thinks that a word is nice if there exists asubstring (contiguous segment of letters) of it of length 26 ...
分类:其他好文   时间:2018-03-07 15:07:44    阅读次数:166
[LeetCode] 208. Implement Trie (Prefix Tree) 实现字典树(前缀树)
Implement a trie with insert, search, and startsWith methods. Note:You may assume that all inputs are consist of lowercase letters a-z. 实现一个数据结构:字典树(前 ...
分类:其他好文   时间:2018-03-07 11:44:08    阅读次数:183
[LeetCode] 17. Letter Combinations of a Phone Number 电话号码的字母组合
Given a digit string, return all possible letter combinations that the number could represent. A mapping of digit to letters (just like on the telepho ...
分类:其他好文   时间:2018-03-03 10:54:39    阅读次数:220
Round #71 (Div. 2 only)
Replace A Time limit: 1000 msMemory limit: 256 MB Replace A Time limit: 1000 msMemory limit: 256 MB You are given a string SS containing only letters  ...
分类:其他好文   时间:2018-03-01 21:52:29    阅读次数:154
Old Berland Language
Berland scientists know that the Old Berland language had exactly n words. Those words had lengths of l1,?l2,?...,?ln letters. Every word consisted of ...
分类:其他好文   时间:2018-03-01 21:48:24    阅读次数:191
[LeetCode] 91. Decode Ways 解码方法
A message containing letters from A-Z is being encoded to numbers using the following mapping: Given an encoded message containing digits, determine t ...
分类:其他好文   时间:2018-02-28 16:26:42    阅读次数:136
40.leetcode17_letter_combinations_of_a_phone_number
1.题目描述 Given a digit string, return all possible letter combinations that the number could represent. A mapping of digit to letters (just like on the ...
分类:其他好文   时间:2018-02-27 01:22:53    阅读次数:179
791. Custom Sort String
S and T are strings composed of lowercase letters. In S, no letter occurs more than once. S was sorted in some custom order previously. We want to per ...
分类:其他好文   时间:2018-02-26 21:51:53    阅读次数:174
[leetcode-791-Custom Sort String]
S and T are strings composed of lowercase letters. In S, no letter occurs more than once. S was sorted in some custom order previously. We want to per ...
分类:其他好文   时间:2018-02-26 20:41:33    阅读次数:307
prim算法
一个连通图的生成树是一个极小的连通子图,它包含图中全部的顶点(n个顶点),但只有n-1条边。 最小生成树:构造连通网的最小代价(最小权值)生成树。 prim算法在严蔚敏树上有解释,但是都是数学语言,很深奥。 最小生成树MST性质:假设N=(V,{E})是一个连通网,U是顶点集V的一个非空子集。若(u ...
分类:编程语言   时间:2018-02-24 11:42:41    阅读次数:160
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