lintcode: (198) Permutation Index II; Problem Statement. Medium. Easy #39 Combination Sum. Single Number. Problems coming from LeetCode, LintCode, TopCoder, CtCi, etc. Medium #35 Search Insert Position. Medium #40 Combination Sum II. lintcode. Hard #33 Search in Rotated Sorted Array. This Problem is similar to String Permutation in LintCode /** * Approach 1: Using Sorting -- (TLE) * Algorithm * The idea behind this approach is that one string will be a permutation of another string * only if both of them contain the same characters the same number of times. House robber II. Hard #38 Count and Say. Given a permutation which may contain repeated numbers, find its index in all the permutations of these numbers, which are ordered in lexicographical order. * @return: All the combinations of k numbers out of 1..n. public List < List < Integer > > combine (int n, int k). Given a positive 32-bit integer n, you need to find the smallest 32-bit integer which has exactly the same digits existing in the integer n and is greater in value than n. If no such positive 32-bit integer exists, you need to return -1.. Medium #35 Search Insert Position. The index begins at 1. Flatten Binary Tree to Linked List. 题解 Medium #32 Longest Valid Parentheses. Medium #37 Sudoku Solver. Given the permutation [1, 4, 2, 2], return 3. Easy #36 Valid Sudoku. Medium #40 Combination Sum II. Medium #37 Sudoku Solver. Example 1: Given the permutation [1, 4, 2, 2], return 3. Hard #33 Search in Rotated Sorted Array. Python; Question. Backtracking 类型的题目，类似的题目还有Subsets, Permutations, Combination Sum, Palindrome Partioning ... Algorithm. Medium #32 Longest Valid Parentheses. Disclaimer: Under construction. Here are some examples. Medium. #31 Next Permutation. Medium #34 Find First and Last Position of Element in Sorted Array. Example; Note; 题解. 【题目描述】 Given a list of integers, which denote a permutation.Find the previous permutation in ascending order.Notice:The list may contains duplicate integers.给定一个整数数组来表示排列，找出其… Array. Hard #38 Count and Say. Graph. Given a list of numbers with duplicate number in it. Next Permutation. Easy #36 Valid Sudoku. Example. #31 Next Permutation. Implement next permutation, which rearranges numbers into the lexicographically next greater permutation of numbers.. LinkedIn. The replacement must be in-place and use only constant extra memory.. Given a permutation which may contain repeated numbers, find its index in all the permutations of these numbers, which are ordered in lexicographical order. Problem Statement. Permutation Index II 198 Question. Easy #39 Combination Sum. Medium #34 Find First and Last Position of Element in Sorted Array. Question. Find all unique permutations. EPI. The index begins at 1. If such arrangement is not possible, it must rearrange it as the lowest possible order (ie, sorted in ascending order). // write your code here Solution Example.