Find XOR Sum of All Pairs Bitwise AND, 1836. Most Visited Sector in a Circular Track, 1561. And a quick google search shows me like 3-4 different examples for this that you could have used. Longest ZigZag Path in a Binary Tree, 1374. Finding valid license for project utilizing AGPL 3.0 libraries. Number of Dice Rolls With Target Sum, 1156. Find the Smallest Divisor Given a Threshold, 1284. 2) Iterate through every character of both strings and increment the count of character in the corresponding count arrays. Design an Expression Tree With Evaluate Function, 1633. Keep Multiplying Found Values by Two, 2155. The Most Recent Orders for Each Product, 1551. acknowledge that you have read and understood our, Data Structure & Algorithm Classes (Live), Data Structures & Algorithms in JavaScript, Data Structure & Algorithm-Self Paced(C++/JAVA), Full Stack Development with React & Node JS(Live), Android App Development with Kotlin(Live), Python Backend Development with Django(Live), DevOps Engineering - Planning to Production, GATE CS Original Papers and Official Keys, ISRO CS Original Papers and Official Keys, ISRO CS Syllabus for Scientist/Engineer Exam, Interview Preparation For Software Developers, http://mathworld.wolfram.com/Permutation.html. Minimum Initial Energy to Finish Tasks, 1671. Count Ways to Make Array With Product, 1736. itertools.combinations() module in Python to print all possible combinations, Count ways to reach the nth stair using step 1, 2 or 3, Print all possible strings of length k that can be formed from a set of n characters. ABC ACB BAC BCA CBA CAB. Remove All Ones With Row and Column Flips, 2131. Check If Array Pairs Are Divisible by k, 1498. Number of Unequal Triplets in Array, 2476. Longest Subsequence Repeated k Times, 2015. Make Array Non-decreasing or Non-increasing, 2264. Number of Smooth Descent Periods of a Stock, 2111. All Paths from Source Lead to Destination, 1061. Insert Delete GetRandom O(1) - Duplicates allowed, 395. Longest Palindrome by Concatenating Two Letter Words, 2133. Maximum Number of Integers to Choose From a Range II, 2566. LeetCode Solutions - Collection of LeetCode Solutions provided with best solutions to crack the interviews of product based companies. Last Substring in Lexicographical Order, 1168. Maximum Number of Books You Can Take, 2356. Minimum Operations to Halve Array Sum, 2209. Users That Actively Request Confirmation Messages, 1940. Find Target Indices After Sorting Array, 2091. Maximum Number of Integers to Choose From a Range I, 2556. Difference Between Element Sum and Digit Sum of an Array, 2538. Smallest Range Covering Elements from K Lists, 659. Efficient Approach: In our recursive function to find all permutations, we can use unordered_set for taking care of duplicate element remaining in the active string. Minimum Rounds to Complete All Tasks, 2245. Flatten a Multilevel Doubly Linked List, 440. Number of Ways to Build Sturdy Brick Wall, 2186. Examples: Input: str = "aa" Output: aa Note that "aa" will be printed only once as duplicates are not allowed. Do it until next higher permutation is not possible. Find Score of an Array After Marking All Elements, 2598. Smallest Value of the Rearranged Number, 2167. Find the Distance Value Between Two Arrays, 1389. Maximum Sum of Two Non-Overlapping Subarrays, 1038. Kth Smallest Element in a Sorted Matrix, 381. Display Table of Food Orders in a Restaurant, 1420. Split a String Into the Max Number of Unique Substrings, 1594. Max Difference You Can Get From Changing an Integer, 1433. Find Customers With Positive Revenue this Year, 1823. Permutations of a given string using STL. Drop Type 1 Orders for Customers With Type 0 Orders, 2085. 2) Iterate through every character of both strings and increment the count of character in the corresponding count arrays. The leetcode problem only asks about the number of unique paths, not a list of unique paths, so to calculate the number you only need to use the combination formula of C(n, k) = n! The base condition will be when all the characters have been used. Input: nums = [1,2,3] Output: [[1,2,3],[1,3,2],[2,1,3],[2,3,1],[3,1,2],[3,2,1]] Example 2: Input: nums = [0,1] Output: [[0,1],[1,0]] Example 3: Input: nums = [1] Output: [[1]] Constraints: * 1 <= nums.length <= 6 acknowledge that you have read and understood our, Data Structure & Algorithm Classes (Live), Data Structures & Algorithms in JavaScript, Data Structure & Algorithm-Self Paced(C++/JAVA), Full Stack Development with React & Node JS(Live), Android App Development with Kotlin(Live), Python Backend Development with Django(Live), DevOps Engineering - Planning to Production, GATE CS Original Papers and Official Keys, ISRO CS Original Papers and Official Keys, ISRO CS Syllabus for Scientist/Engineer Exam, Interview Preparation For Software Developers, Find an N x N grid whose xor of every row and column is equal, Minimum element left from the array after performing given operations. Check If a String Contains All Binary Codes of Size K, 1464. String Transforms Into Another String, 1155. Here is a solution that is used as a basis in backtracking. Find the Kth Smallest Sum of a Matrix With Sorted Rows, 1441. Construct the Lexicographically Largest Valid Sequence, 1719. Find Total Time Spent by Each Employee, 1743. Algorithm One thing to note is that if you use an array to save the result directly, and if there are repeated characters in t, there may be duplicates, such as t = "baa", then the final result will have duplicates Coordinate With Maximum Network Quality, 1621. Paths in Maze That Lead to Same Room, 2078. For example, " abcd " and " dabc " are permutations of each other. Partition Array According to Given Pivot, 2163. Count Elements With Strictly Smaller and Greater Elements, 2150. Minimum ASCII Delete Sum for Two Strings, 714. Divide Array in Sets of K Consecutive Numbers, 1297. Minimum Fuel Cost to Report to the Capital, 2479. )Note that there are n! Count Hills and Valleys in an Array, 2212. Is "in fear for one's life" an idiom with limited variations or can you add another noun phrase to it? Partition Array Into Three Parts With Equal Sum, 1016. Count Nodes Equal to Sum of Descendants, 1974. itertools.combinations() module in Python to print all possible combinations, Count ways to reach the nth stair using step 1, 2 or 3, Print all possible strings of length k that can be formed from a set of n characters, Heap's Algorithm for generating permutations, Write a C program to print all permutations of a given string, https://www.geeksforgeeks.org/write-a-c-program-to-print-all-permutations-of-a-given-string/. Auxiliary Space: O(r - l) Note: The above solution prints duplicate permutations if there are repeating characters in the input string. Check if There is a Path With Equal Number of 0's And 1's, 2511. Maximum Font to Fit a Sentence in a Screen, 1619. Minimum Number of Swaps to Make the Binary String Alternating, 1866. rightBarExploreMoreList!=""&&($(".right-bar-explore-more").css("visibility","visible"),$(".right-bar-explore-more .rightbar-sticky-ul").html(rightBarExploreMoreList)), Generate all binary permutations such that there are more or equal 1's than 0's before every point in all permutations, Write a program to print all Permutations of given String, Print all distinct permutations of a given string with duplicates, Print all the palindromic permutations of given string in alphabetic order, Print all lexicographical greater permutations of a given string, Print all permutations of a string in Java, Print all the permutations of a string without repetition using Collections in Java, Print all palindrome permutations of a string, Java Program to print distinct permutations of a string, Print all permutations with repetition of characters. To generate all the permutations of an array from index l to r, fix an element at index l and recur for the index l+1 to r. Backtrack and fix another element at index l and recur for index l+1 to r. For example, abcd and dabc are Permutation of each other. Form Smallest Number From Two Digit Arrays, 2606. Example 3: Maximum White Tiles Covered by a Carpet, 2273. Delete Characters to Make Fancy String, 1959. Find Subsequence of Length K With the Largest Sum, 2106. Check If Word Is Valid After Substitutions, 1005. Latest Time by Replacing Hidden Digits, 1737. Count the Number of Beautiful Subarrays, 2591. The Number of Employees Which Report to Each Employee, 1735. Categorize Box According to Criteria, 2526. Sell Diminishing-Valued Colored Balls, 1649. Find Smallest Common Element in All Rows, 1203. Auxiliary Space: O(1), The above algorithm is in the time complexity of O(n2 * n!) Minimum Operations to Remove Adjacent Ones in Matrix, 2124. Append Characters to String to Make Subsequence, 2489. Time Needed to Inform All Employees, 1378. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. Maximum Subarray Sum After One Operation, 1749. Maximum Number of Consecutive Values You Can Make, 1802. Substrings of Size Three with Distinct Characters, 1878. Minimum Moves to Equal Array Elements II, 467. Number of Ways to Arrive at Destination, 1978. Construct Binary Tree from Preorder and Postorder Traversal, 893. Smallest Rectangle Enclosing Black Pixels, 309. Managers with at Least 5 Direct Reports, 571. Partition Array Such That Maximum Difference Is K, 2300. Maximum Number of Accepted Invitations, 1821. CPP C Java Python3 C# Javascript #include <bits/stdc++.h> using namespace std; int findCeil (string str, char first, int l, int h) { int ceilIndex = l; for (int i = l + 1; i <= h; i++) Create Binary Tree From Descriptions, 2197. Maximum Area of a Piece of Cake After Horizontal and Vertical Cuts, 1466. Maximum Value at a Given Index in a Bounded Array, 1805. Lowest Common Ancestor of a Binary Tree IV, 1680. Minimum Deletions to Make String Balanced, 1658. permutations and it requires O(n) time to print a permutation. Amount of Time for Binary Tree to Be Infected, 2388. Lexicographically Smallest String After Applying Operations, 1628. Build Array Where You Can Find The Maximum Exactly K Comparisons, 1422. Number of Spaces Cleaning Robot Cleaned, 2064. but we can achieve a better time complexity of O(n! Check If String Is a Prefix of Array, 1962. Maximum Score from Performing Multiplication Operations, 1771. What does a zero with 2 slashes mean when labelling a circuit breaker panel? Largest Combination With Bitwise AND Greater Than Zero, 2279. 1Two Sum25arraysortsetTwo Pointers2Add Two Numbers34linked listTwo PointersMath3Longest Substring Without Repeating Characters32stringTwo Pointershashtable4Median of . Apply Bitwise Operations to Make Strings Equal, 2550. Minimum Operations to Make the Array Alternating, 2171. Minimum Total Space Wasted With K Resizing Operations, 1960. I came up with a solution as follow. Find Elements in a Contaminated Binary Tree, 1263. Find K-Length Substrings With No Repeated Characters, 1101. Sort Items by Groups Respecting Dependencies, 1209.