LeetCode 60: Permutation Sequence
Problem Restatement We are given two integers, n and k . The set is: [1, 2, 3, ..., n] This set has n! unique permutations. If we list all permutations in sorted order, we need to return the k th permutation as a string. The official constraints are 1 <= n <= 9 and 1 <= k <= n! . Input and Output Item Meaning Input Two integers n and...