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Common Subsequence
DescriptionA subsequence of a given sequence is the given sequence with some elements (possible none) left out. Given a sequence X = another sequence....
分类:其他好文   时间:2015-10-19 12:13:15    阅读次数:193
Subsets II 解答
QuestionGiven a collection of integers that might contain duplicates,nums, return all possible subsets.Note:Elements in a subset must be in non-descen...
分类:其他好文   时间:2015-10-19 07:09:01    阅读次数:222
LeetCode 17 Letter Combinations of a Phone Number(电话号码的字母组合)
翻译给定一个数字字符串,返回所有这些数字可以表示的字母组合。一个数字到字母的映射(就像电话按钮)如下图所示。输入:数字字符串“23” 输出:["ad", "ae", "af", "bd", "be", "bf", "cd", "ce", "cf"]备注:尽管以上答案是无序的,如果你想的话你的答案可以是有序的。原图原文Given a digit string, return all possible...
分类:其他好文   时间:2015-10-18 11:27:43    阅读次数:272
Combinations 解答
QuestionGiven two integersnandk, return all possible combinations ofknumbers out of 1 ...n.For example,Ifn= 4 andk= 2, a solution is:[ [2,4], [3,4],.....
分类:其他好文   时间:2015-10-18 06:36:31    阅读次数:130
Permutations 解答
QuestionGiven a collection of numbers, return all possible permutations.For example,[1,2,3]have the following permutations:[1,2,3],[1,3,2],[2,1,3],[2,...
分类:其他好文   时间:2015-10-16 11:27:32    阅读次数:149
Mysql_mysql 性能分析及explain用法
1 使用explain语句去查看分析结果,如explain select * from test1 where id=1;会出现:idselecttypetabletype possible_keyskey key_lenref rowsextra各列其中,type=const表示通过索引一次就找到...
分类:数据库   时间:2015-10-15 18:39:51    阅读次数:205
Subsets 解答
QuestionGiven a set of distinct integers,nums, return all possible subsets.Note:Elements in a subset must be in non-descending order.The solution set ...
分类:其他好文   时间:2015-10-14 14:22:51    阅读次数:126
Combinations
Given two integersnandk, return all possible combinations ofknumbers out of 1 ...n.For example,Ifn= 4 andk= 2, a solution is:[ [2,4], [3,4], [2,3],...
分类:其他好文   时间:2015-10-13 07:00:46    阅读次数:179
Permutations
Given a collection of numbers, return all possible permutations.For example,[1,2,3]have the following permutations:[1,2,3],[1,3,2],[2,1,3],[2,3,1],[3,...
分类:其他好文   时间:2015-10-13 06:58:53    阅读次数:228
Letter Combinations of a Phone Number
Given a digit string, return all possible letter combinations that the number could represent.A mapping of digit to letters (just like on the telephon...
分类:其他好文   时间:2015-10-13 01:34:13    阅读次数:223
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