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[Lintcode]15. Permutations/[Leetcode]46. Permutations
"15. Permutations" / "46. Permutations" 本题难度: Medium Topic: Search & Recursion Description Given a list of numbers, return all possible permutations. ...
分类:其他好文   时间:2019-02-16 09:27:35    阅读次数:173
[Lintcode]16. Permutations II/[Leetcode]47. Permutations II
"16. Permutations II" / "47. Permutations II" 本题难度: Medium Topic: Search & Recursion Description Given a list of numbers with duplicate number in it. ...
分类:其他好文   时间:2019-02-16 09:25:50    阅读次数:170
Permutations - LeetCode
[toc] 题目链接 "Permutations LeetCode" 注意点 n个数字共有 个全排列 解法 解法一:每一个排列用 "Next Permutation LeetCode" 中的函数生成,一共有 个。时间复杂度O(n)。 小结 排列题,有许多变种 ...
分类:其他好文   时间:2019-02-15 15:53:40    阅读次数:174
19.2.9 [LeetCode 60] Permutation Sequence
The set [1,2,3,...,n] contains a total of n! unique permutations. By listing and labeling all of the permutations in order, we get the following seque ...
分类:其他好文   时间:2019-02-09 16:27:35    阅读次数:170
复习backtracking 并总结
每一个分支把leetcode backtracking 几十个题目重新复习一遍,领略back tracking 精髓。 一 排列问题: 46/47 Permutations : 46 没有重复数字 47 包含重复数字 46: 关键是采用used[i] 来标记一个i 是否已经被选择了, 注意used ...
分类:其他好文   时间:2019-02-09 10:21:18    阅读次数:181
Codeforces Round #175 (Div. 2) A~D 题解
A.Slightly Decreasing Permutations Permutation p is an ordered set of integers p1, p2, ..., pn, consisting of n distinct positive integers, each of th ...
分类:其他好文   时间:2019-02-09 10:19:12    阅读次数:141
19.2.7 [LeetCode 47] Permutations II
Given a collection of numbers that might contain duplicates, return all possible unique permutations. Example: 1 class Solution { 2 public: 3 vector<v ...
分类:其他好文   时间:2019-02-07 19:05:26    阅读次数:151
19.2.7 [LeetCode 46] Permutations
Given a collection of distinct integers, return all possible permutations. Example: 1 class Solution { 2 public: 3 void build(vector<bool>visited, vec ...
分类:其他好文   时间:2019-02-07 19:02:36    阅读次数:151
Permutations LT46
Given a collection of distinct integers, return all possible permutations. Example: Input: [1,2,3] Output: [ [1,2,3], [1,3,2], [2,1,3], [2,3,1], [3,1, ...
分类:其他好文   时间:2019-02-05 00:28:14    阅读次数:171
Permutation Sequence LT60
The set [1,2,3,...,n] contains a total of n! unique permutations. By listing and labeling all of the permutations in order, we get the following seque ...
分类:其他好文   时间:2019-02-03 11:07:07    阅读次数:129
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