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[LintCode] Generate Parentheses 生成括号
Given n pairs of parentheses, write a function to generate all combinations of well-formed parentheses. Given n pairs of parentheses, write a function ...
分类:其他好文   时间:2016-07-19 09:08:46    阅读次数:113
39. Combination Sum java solutions
Given a set of candidate numbers (C) and a target number (T), find all unique combinations in C where the candidate numbers sums to T. The same repeat ...
分类:编程语言   时间:2016-07-14 01:40:58    阅读次数:191
Combination Sum | & ||
Combination Sum | Given a set of candidate numbers (C) and a target number (T), find all unique combinations in C where the candidate numbers sums to  ...
分类:其他好文   时间:2016-07-05 06:25:29    阅读次数:154
【leetcode】22. Generate Parentheses
题目描述: Given n pairs of parentheses, write a function to generate all combinations of well-formed parentheses. 解题分析: 这类题一般都要用递归的方法来解决。需要设两个集合类分别存储待匹配的( ...
分类:其他好文   时间:2016-07-05 01:09:06    阅读次数:180
【leetcode】17. Letter Combinations of a Phone Number
题目描述: Given a digit string, return all possible letter combinations that the number could represent. 解题分析: 回溯法的典型应用,用一个数据结构表示出按键与其表示字母的对应关系,直接用回溯法做即可。 ...
分类:其他好文   时间:2016-07-05 01:02:26    阅读次数:171
LeetCode 216. Combination Sum III
Problem: https://leetcode.com/problems/combination-sum-iii/ Find all possible combinations of k numbers that add up to a number n, given that only num ...
分类:其他好文   时间:2016-07-03 00:27:31    阅读次数:122
POJ1285 Combinations, Once Again(背包 排列组合)
背包解组合数学问题,n种物品,每种num[i]个,求取r个的方法数。 背包思想,f[j]表示当前取j个数的方法数,则状态转移方程为 f[j] += f[k](max(j - num[i], 0) <= k < j) 外层循环枚举物品,内层循环从大到小枚举空间,最内层枚举方法数。 #include<i ...
分类:其他好文   时间:2016-06-28 23:36:32    阅读次数:188
216. Combination Sum III java solutions
Find all possible combinations of k numbers that add up to a number n, given that only numbers from 1 to 9 can be used and each combination should be ...
分类:编程语言   时间:2016-06-24 14:25:51    阅读次数:173
216. Combination Sum III
Find all possible combinations of k numbers that add up to a number n, given that only numbers from 1 to 9 can be used and each combination should be ...
分类:其他好文   时间:2016-06-23 12:28:22    阅读次数:109
254.Factor Combinations
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分类:其他好文   时间:2016-06-21 12:43:05    阅读次数:137
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