Private void PermuteHelper2(int nums, List result)įor (int i = 0 i j != i). Example 1: Input: s1 'ab', s2 'eidbaooo' Output: true Explanation: s2 contains one permutation of s1 ('ba'). LeetCode - The Worlds Leading Online Programming Learning Platform. In other words, return true if one of s1 's permutations is the substring of s2. Permutations - Given an array nums of distinct integers, return all the possible permutations. then randomly pick up the rest index of the string. 326 Companies Given two strings s1 and s2, return true if s2 contains a permutation of s1, or false otherwise. Solution 1: first, I pick randomly from a given string, such as B(index = 1), and remove index = 1. A string of length n has n! permutation.īelow are the permutations of string ABC. Permutation means the sequence of by PHIL Coding Memo Medium Given an array nums of distinct integers, return all the possible permutations. Problem Example 1 : Example 2 : Example 3 : Constraints Permutations Leetcode Solution 46. A permutation, also called an “arrangement number” or “order,” is a rearrangement of the elements of an ordered list S into a one-to-one correspondence with S itself. Permutations is a Leetcode medium level problem.
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