Permutations II Given a collection of numbers that might contain duplicates, return all possible unique permutations. For example,[1,1,2] have ...
Given a collection of numbers that might contain duplicates, return all possible unique permutations. Example: 這道題是之前那道Permutations的延伸,由於輸入數組有可能出現重復數字,如果按照之前的算法運算,會有重復排列產生,我們要避免重復的產生,在遞歸函數中要判斷前面一個數和當 ...
2015-03-23 14:57 8 22154 推薦指數:
Permutations II Given a collection of numbers that might contain duplicates, return all possible unique permutations. For example,[1,1,2] have ...
了,記得每次要把visited恢復。 這不是重點。。重點是有個用SWAP的方法,46 47都可以 ...
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 ...
Given a string s, return all the palindromic permutations (without duplicates) of it. Return an empty list if no palindromic permutation could ...
Given a collection of distinct integers, return all possible permutations. Example: 這道題是求全排列問題,給的輸入數組沒有重復項,這跟之前的那道 Combinations 和類似,解法基本相 ...
一、開篇 Permutation,排列問題。這篇博文以幾道LeetCode的題目和引用劍指offer上的一道例題入手,小談一下這種類型題目的解法。 二、上手 最典型的permutation題目是這樣的: Given a collection of numbers, return all ...
題目: Given a collection of numbers that might contain duplicates, return all possible unique permutations. For example, [1,1,2] have ...
Given two integers n and k, you need to construct a list which contains n different positive i ...