代码# Go packageleetcodeimport"sort"funcpermuteUnique(nums[]int)[][]int{iflen(nums)==0{return[][]int{}}used,p,res:=make([]bool,len(nums)),[]int{},[][]int{}sort.Ints(nums)// 这里是去重的关键逻辑generatePermutation47(nums,0,p,&res,&used)returnres}funcgeneratePermutation47(nums[...
importjava.util.*;publicclassLeetCode{publicstaticvoidmain(String[] args){ Scanner sc=newScanner(System.in);intn=Integer.parseInt(sc.nextLine());int[][] matrix=newint[n][n];for(inti=0;i<n;i++){ String str=sc.nextLine(); String[] strs=str.split(" |,");for(intj=0;j<n;j++)...
[Leetcode] Permutations I have two solutions for this problem, the first one is from the undergraduate stage, the second one is from the CTCI (permute string) The common point of the two methods lies in the recursive method they both used. 1. Enumerate the head First method sounds more e...
public: string getPermutation(int n, int k) { string str = string("123456789").substr(0, n); //取前n个数字 string ans; for(int i=0; i<n; ++i) k = getKth(ans, str, k); //每次获取第i个数 return ans; } int getKth(string& ans, string& str, int k) { int num = fac...
一、开篇Permutation,排列问题。这篇博文以几道LeetCode的题目和引用剑指offer上的一道例题入手,小谈一下这种类型题目的解法。二、上手最典型的permutation题目是这样的:Given a collection of numbers, return all possible p
2.unoreder--->sort first avoid , 3 3 0 3 this same duplicate variable not in the ajacent position. #include<stdio.h>#include<iostream>#include<string>#include<vector>#include<set>#include<algorithm>usingnamespacestd;classSolution {public: vector...
Leetcode-Permutations II Given a collection of numbers that might contain duplicates, return all possible unique permutations. For example, [1,1,2]have the following unique permutations: [1,1,2], [1,2,1], and [2,1,1]. Have you met this question in a real interview?
链接:http://leetcode.com/problems/permutations/ 题解: 求数组的全排列。需要用到DFS和Backtracking。 原理是从0到数组长度N,每次对之前加入的元素进行回溯。 注意此解法假定输入数组之中没有重复元素。 Time Complexity - O(n!), Space Complexity - O(n)。
[LeetCode] 46. Permutations Given an arraynumsof distinct integers, returnall the possible permutations. You can return the answer in any order. Example 1: Input: nums = [1,2,3] Output: [[1,2,3],[1,3,2],[2,1,3],[2,3,1],[3,1,2],[3,2,1]]...
If such arrangement is not possible, it must rearrange it as the lowest possible order (ie, sorted in ascending order). The replacement must be in-place, do not allocate extra memory. Here are some examples. Inputs are in the left-hand column and its corresponding outputs are in the righ...