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40. Combination Sum II
Given a collection of candidate numbers (candidates) and a target number (target), find all unique combinations in candidates where the candidate numb ...
分类:其他好文   时间:2019-10-19 20:19:00    阅读次数:84
python值itertools模块
一、介绍 itertools 是python的迭代器模块,itertools提供的工具相当高效且节省内存。使用这些工具,你将能够创建自己定制的迭代器用于高效率的循环。 二、模块使用与代码 1、元素的组合 itertools.combinations(iterable, r) iterable:一个可 ...
分类:编程语言   时间:2019-10-11 12:29:34    阅读次数:83
LeetCode-Backtracking
17. Letter Combinations of a Phone Number 电话号码的字母组合 https://leetcode.com/problems/letter-combinations-of-a-phone-number/ 题目:如果字符串包含来自2-9的数字,则返回数字可以表示的 ...
分类:其他好文   时间:2019-10-04 22:59:51    阅读次数:117
[LC] 22. Generate Parentheses
Given n pairs of parentheses, write a function to generate all combinations of well-formed parentheses. For example, given n = 3, a solution set is: ...
分类:其他好文   时间:2019-09-22 12:49:54    阅读次数:71
17. Letter Combinations of a Phone Number
17. Letter Combinations of a Phone Number Given a string containing digits from 2-9 inclusive, return all possible letter combinations that the number ...
分类:其他好文   时间:2019-09-18 09:17:11    阅读次数:85
77. Combinations
Given two integers n and k, return all possible combinations of k numbers out of 1 ... n. Example: backtracking的变种 ...
分类:其他好文   时间:2019-09-18 09:15:52    阅读次数:108
Leetcode 17. Letter Combinations of a Phone Number(水)
17. Letter Combinations of a Phone Number Medium Medium Given a string containing digits from 2-9 inclusive, return all possible letter combinations t ...
分类:其他好文   时间:2019-09-14 11:24:10    阅读次数:108
【LeetCode】93. Restore IP Addresses 【面试题】
Restore IP Addresses Given a string containing only digits, restore it by returning all possible valid IP address combinations. For example:Given  ...
分类:其他好文   时间:2019-09-03 11:55:40    阅读次数:75
leetcode 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:2019-08-29 15:27:24    阅读次数:81
POJ 1306 暴力求组合数
Combinations Time Limit: 1000MS Memory Limit: 10000K Total Submissions: 11049 Accepted: 5013 Description Computing the exact number of ways that N thi ...
分类:其他好文   时间:2019-08-24 15:04:28    阅读次数:73
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