permutation. Longest Substring with At Least K Repeating Characters, 421. Final Value of Variable After Performing Operations, 2014. Binary Searchable Numbers in an Unsorted Array, 1967. Minimum Obstacle Removal to Reach Corner, 2292. A Permutation of a string is another string that contains same characters, only the order of characters can be different. Minimum Operations to Reduce an Integer to 0, 2572. 3) Compare count arrays. Optimize Water Distribution in a Village, 1170. Flip Binary Tree To Match Preorder Traversal, 982. Intersection of Three Sorted Arrays, 1217. Detect Pattern of Length M Repeated K or More Times, 1567. The Number of Employees Which Report to Each Employee, 1735. Build Array Where You Can Find The Maximum Exactly K Comparisons, 1422. Minimum Non-Zero Product of the Array Elements, 1972. 47 Permutations II - Medium Problem: Given a collection of numbers that might contain duplicates, return all possible unique permutations. Substrings That Begin and End With the Same Letter, 2084. Maximum Sum of Distinct Subarrays With Length K, 2470. Leftmost Column with at Least a One, 1430. Find Closest Node to Given Two Nodes, 2366. Maximum Number of Accepted Invitations, 1821. Final Prices With a Special Discount in a Shop, 1477. Probability of a Two Boxes Having The Same Number of Distinct Balls, 1474. Find Minimum in Rotated Sorted Array II, 158. Change Null Values in a Table to the Previous Value, 2389. Average Salary Excluding the Minimum and Maximum Salary, 1493. Count Number of Homogenous Substrings, 1761. Find the Start and End Number of Continuous Ranges, 1287. Find the Substring With Maximum Cost, 2609. Number of Ways to Rearrange Sticks With K Sticks Visible, 1867. Find XOR Sum of All Pairs Bitwise AND, 1836. Maximum Score After Splitting a String, 1423. 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! It is given here. Maximum Number of Books You Can Take, 2356. Maximum XOR of Two Numbers in an Array, 423. Check If a String Is a Valid Sequence from Root to Leaves Path in a Binary Tree, 1431. The distinct characters algorithm can be found here https://www.geeksforgeeks.org/write-a-c-program-to-print-all-permutations-of-a-given-string/. Minimum Distance to the Target Element, 1849. Intervals Between Identical Elements, 2123. Largest Component Size by Common Factor, 967. Find All Numbers Disappeared in an Array, 452. Count the Number of Good Subsequences, 2541. Minimum Operations to Make the Array Alternating, 2171. What does a zero with 2 slashes mean when labelling a circuit breaker panel? A permutation should not have repeated strings in the output. Maximum Number of Consecutive Values You Can Make, 1802. Traffic Light Controlled Intersection, 1281. Count Lattice Points Inside a Circle, 2250. Example: Count Hills and Valleys in an Array, 2212. It is strongly recommended to refer below post as a prerequisite of this post.Write a C program to print all permutations of a given stringThe algorithm discussed on above link doesnt handle duplicates. Minimum Difficulty of a Job Schedule, 1339. Longest Subsequence Repeated k Times, 2015. The technique above uses an extra loop inside the recursion which causes a major time complexity cost. Example 1: Input: nums = [1,1,2] Output: [ [1,1,2], [1,2,1], [2,1,1]] Example 2: Input: nums = [1,2,3] Output: [ [1,2,3], [1,3,2], [2,1,3], [2,3,1], [3,1,2], [3,2,1]] Constraints: 1 <= nums.length <= 8 -10 <= nums [i] <= 10 Below is the implementation of the above idea: 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, Print first n distinct permutations of string using itertools in Python, Java Program to print distinct permutations of a string, Iterative program to generate distinct Permutations of a String, Distinct permutations of a string containing duplicates using HashSet in Java, Count of distinct permutations of every possible length of given string, Print all distinct permutations of a given string with duplicates, Distinct Numbers obtained by generating all permutations of a Binary String, Print distinct sorted permutations with duplicates allowed in input, Count of distinct permutations of length N having no similar adjacent characters. Find Critical and Pseudo-Critical Edges in Minimum Spanning Tree, 1491. Populating Next Right Pointers in Each Node II, 153. Running Total for Different Genders, 1309. Minimum Cost of Buying Candies With Discount, 2146. I came up with a solution as follow. Shortest Path with Alternating Colors, 1131. Number of Valid Words in a Sentence, 2048. This video explains an important programming interview problem which is to find the Kth permutation of a string of length N. In this problem, we are given number of digits N and Kth. Source: Mathword(http://mathworld.wolfram.com/Permutation.html), Below are the permutations of string ABC. Basically, I recursively generate permutations. 3) Compare count arrays. Method 1 (Use Sorting)1) Sort both strings2) Compare the sorted strings, Time Complexity: Time complexity of this method depends upon the sorting technique used. Shortest Distance to Target String in a Circular Array, 2516. Count Ways to Build Rooms in an Ant Colony, 1921. Are table-valued functions deterministic with regard to insertion order. Longest Binary Subsequence Less Than or Equal to K, 2313. Max Sum of Rectangle No Larger Than K, 378. Minimum Difference in Sums After Removal of Elements, 2164. Convert Binary Number in a Linked List to Integer, 1292. Print all distinct permutations of a string having duplicates. Find Nearest Right Node in Binary Tree, 1604. Minimize Hamming Distance After Swap Operations, 1723. Check it out, hope its what you are looking for! Number of Pairs of Interchangeable Rectangles, 2002. Given a string str, the task is to print all the permutations of str. Minimum Score of a Path Between Two Cities, 2493. Minimum Insertion Steps to Make a String Palindrome, 1315. Verify Preorder Serialization of a Binary Tree, 340. If we use a O(nLogn) sorting algorithm like merge sort, then the complexity becomes O(nLogn). Form Smallest Number From Two Digit Arrays, 2606. Frequency of the Most Frequent Element, 1839. Approach: Write a recursive function that removes a character one by one from the original string and generates a new string by appending these removed characters. Convert Sorted Array to Binary Search Tree, 109. Find Substring With Given Hash Value, 2158. Count Substrings That Differ by One Character, 1639. 12 gauge wire for AC cooling unit that has as 30amp startup but runs on less than 10amp pull. Maximize Number of Subsequences in a String, 2208. Check Distances Between Same Letters, 2400. As on an average all the unordered_set operations like insert() and find() are in O(1) time then the algorithm time complexity will not change by using unordered_set. 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. Permutation in String Leetcode Solution: Minimize the Difference Between Target and Chosen Elements, 1983. But, this is not the case with C++ sets. Thus, swapping it will produce repeated permutations. Use Raster Layer as a Mask over a polygon in QGIS. Distribute Money to Maximum Children, 2593. Check Whether Two Strings are Almost Equivalent, 2071. In this case there were no duplicates, so results remains . Check if All Characters Have Equal Number of Occurrences, 1942. People Whose List of Favorite Companies Is Not a Subset of Another List, 1453. Logical OR of Two Binary Grids Represented as Quad-Trees, 562. Maximum Number of Events That Can Be Attended, 1354. Best Time to Buy and Sell Stock with Transaction Fee, 730. Sum of Absolute Differences in a Sorted Array, 1687. Amount of New Area Painted Each Day, 2160. Serialize and Deserialize Binary Tree, 298. Maximum Number of Vowels in a Substring of Given Length, 1457. Divide Array in Sets of K Consecutive Numbers, 1297. Remove Duplicates from Sorted List II, 103. Decrypt String from Alphabet to Integer Mapping, 1312. Check If Word Is Valid After Substitutions, 1005. Divide a String Into Groups of Size k, 2139. Remove Duplicates from Sorted Array II, 82. Lowest Common Ancestor of a Binary Search Tree, 236. Friendly Movies Streamed Last Month, 1497. Create Binary Tree From Descriptions, 2197. Distinct Prime Factors of Product of Array, 2522. Find the Longest Balanced Substring of a Binary String, 2610. Number of Students Doing Homework at a Given Time, 1452. Maximum Number of Removable Characters, 1899. Maximum Score Words Formed by Letters, 1261. Removing Minimum and Maximum From Array, 2093. Count Number of Distinct Integers After Reverse Operations, 2446. Minimum Operations to Make the Array Increasing, 1828. Check for Contradictions in Equations, 2309. Minimized Maximum of Products Distributed to Any Store, 2068. Special Positions in a Binary Matrix, 1585. Initialize all values in count arrays as 0. Minimum Number of Days to Disconnect Island, 1569. Check if Word Can Be Placed In Crossword, 2019. Minimum Length of String After Deleting Similar Ends, 1751. Construct Smallest Number From DI String, 2378. ABC ACB BAC BCA CBA CAB. Longest Subarray With Maximum Bitwise AND, 2422. 2) Iterate through every character of both strings and increment the count of character in the corresponding count arrays. Best Time to Buy and Sell Stock with Cooldown, 314. K-th Smallest in Lexicographical Order, 448. Number of Ways to Build House of Cards, 2190. Number of Ways to Arrive at Destination, 1978. Count Nodes Equal to Sum of Descendants, 1974. I am reviewing a very bad paper - do I have to be nice? Next Greater Numerically Balanced Number, 2051. Minimum Degree of a Connected Trio in a Graph, 1764. Find All Lonely Numbers in the Array, 2151. Determine Whether Matrix Can Be Obtained By Rotation, 1887. Find the Longest Valid Obstacle Course at Each Position, 1966. Find the Maximum Number of Marked Indices, 2577. Closest Nodes Queries in a Binary Search Tree, 2477. Find Three Consecutive Integers That Sum to a Given Number, 2178. Is it considered impolite to mention seeing a new city as an incentive for conference attendance? Replace All ? Reverse Nodes in Even Length Groups, 2077. Maximum Product Difference Between Two Pairs, 1916. 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. Find the Kth Largest Integer in the Array, 1986. The Number of Seniors and Juniors to Join the Company II, 2011. Replace Non-Coprime Numbers in Array, 2200. Count Unreachable Pairs of Nodes in an Undirected Graph, 2320. Number of Subsequences That Satisfy the Given Sum Condition, 1502. Find the Kth Smallest Sum of a Matrix With Sorted Rows, 1441. Minimum Deletions to Make String Balanced, 1658. Recall first how we print permutations without any duplicates in the input string. Evaluate the Bracket Pairs of a String, 1812. Maximum of Minimum Values in All Subarrays, 1951. Managers with at Least 5 Direct Reports, 571. Number of Ways Where Square of Number Is Equal to Product of Two Numbers, 1579. Find Smallest Letter Greater Than Target, 747. Customers Who Bought Products A and B but Not C, 1403. Minimum Flips in Binary Tree to Get Result, 2314. Algorithm for Leetcode problem Permutations All the permutations can be generated using backtracking. Check if There is a Valid Path in a Grid, 1398. Minimum Numbers of Function Calls to Make Target Array, 1560. Make the XOR of All Segments Equal to Zero, 1789. The Number of the Smallest Unoccupied Chair, 1944. Find the Student that Will Replace the Chalk, 1896. The time complexity of this algorithm is O(n^2). How to print size of array parameter in C++? Count Positions on Street With Required Brightness, 2238. Shortest Subarray to be Removed to Make Array Sorted, 1576. Count All Valid Pickup and Delivery Options, 1364. Reduction Operations to Make the Array Elements Equal, 1888. Maximum Subarray Sum with One Deletion, 1190. x (n - k)!) Number of Substrings With Fixed Ratio, 2491. Reconstruct Original Digits from English, 424. Smallest Rectangle Enclosing Black Pixels, 309. Find a Corresponding Node of a Binary Tree in a Clone of That Tree, 1381. Permutations - Given an array nums of distinct integers, return all the possible permutations. A-143, 9th Floor, Sovereign Corporate Tower, We use cookies to ensure you have the best browsing experience on our website. Kids With the Greatest Number of Candies, 1432. Replace Employee ID With The Unique Identifier, 1379. The Number of Passengers in Each Bus II, 2154. Number of Smooth Descent Periods of a Stock, 2111. *n) which was there in the case of all distinct characters in the input by some modification in that algorithm. Check if One String Swap Can Make Strings Equal, 1794. The Score of Students Solving Math Expression, 2020. Checking Existence of Edge Length Limited Paths II, 1725. Subtree Removal Game with Fibonacci Tree, 2006. While generating permutations, let's say we are at index = 0, and swap it with all elements after it. Check if Every Row and Column Contains All Numbers, 2134. can one turn left and right at a red light with dual lane turns? Longest ZigZag Path in a Binary Tree, 1374. Maximum Product of Two Elements in an Array, 1465. Subsequence of Size K With the Largest Even Sum, 2099. Replace the Substring for Balanced String, 1237. Algorithm to print all permutations of a string with no duplicates [closed], http://www.bearcave.com/random_hacks/permute.html, The philosopher who believes in Web Assembly, Improving the copy in the close modal and post notices - 2023 edition, New blog post from our CEO Prashanth: Community is the future of AI. Count Number of Pairs With Absolute Difference K, 2007. Illustration: Let us understand with the below example. 1Two Sum25arraysortsetTwo Pointers2Add Two Numbers34linked listTwo PointersMath3Longest Substring Without Repeating Characters32stringTwo Pointershashtable4Median of . Minimize Max Distance to Gas Station, 793. Check Array Formation Through Concatenation, 1644. http://www.bearcave.com/random_hacks/permute.html, Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Count the Number of Vowel Strings in Range, 2587. Largest Submatrix With Rearrangements, 1731. In that case, insert the generated string (a permutation of the original string) in a set in order to avoid duplicates. Queries on Number of Points Inside a Circle, 1830. Minimum Adjacent Swaps for K Consecutive Ones, 1704. Minimum Number of Operations to Make Array Continuous, 2010. Check if a Parentheses String Can Be Valid, 2117. Preimage Size of Factorial Zeroes Function, 795. Minimum Swaps to Make Strings Equal, 1249. Maximum Number of Integers to Choose From a Range I, 2556. . Minimum Number of Days to Make m Bouquets, 1485. Longer Contiguous Segments of Ones than Zeros, 1876. Find First Palindromic String in the Array, 2110. Count Common Words With One Occurrence, 2086. 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. Widest Pair of Indices With Equal Range Sum, 1984. Partition String Into Substrings With Values at Most K, 2524. Time Complexity: O(n*n!) Input: str = "ab" Output: ab ba Smallest Subsequence of Distinct Characters, 1085. Sort Items by Groups Respecting Dependencies, 1209. Average Salary: Departments VS Company, 632. Find the Quiet Students in All Exams, 1413. Remove Colored Pieces if Both Neighbors are the Same Color, 2039. Restore the Array From Adjacent Pairs. Maximum Difference by Remapping a Digit, 2567. Maximum Sum of Two Non-Overlapping Subarrays, 1038. Second Minimum Time to Reach Destination, 2046. Largest Number After Mutating Substring, 1950. Insert into a Sorted Circular Linked List, 712. Count Ways to Make Array With Product, 1736. Minimum Score After Removals on a Tree, 2323. Given a collection of numbers, nums , that might contain duplicates, return all possible unique permutations in any order. LeetCode - Permutations II (Java) Given a collection of numbers that might contain duplicates, return all possible unique permutations. Minimum Deletions to Make Character Frequencies Unique, 1648. Minimum Cost to Move Chips to The Same Position, 1218. Merge Two 2D Arrays by Summing Values, 2571. Should the alternative hypothesis always be the research hypothesis? Minimum Number of Days to Eat N Oranges, 1557. Find All K-Distant Indices in an Array, 2201. The Most Frequently Ordered Products for Each Customer, 1597. Largest Positive Integer That Exists With Its Negative, 2442. Minimize Result by Adding Parentheses to Expression, 2234. Maximum Number of Words You Can Type, 1939. Numbers With Same Consecutive Differences, 971. Of course the algorithm is pretty simple. Concatenation of Consecutive Binary Numbers, 1684. Categorize Box According to Criteria, 2526. Count Different Palindromic Subsequences, 744. Maximize Sum Of Array After K Negations, 1007. Minimum Money Required Before Transactions, 2414. Maximum Number of Words Found in Sentences, 2115. Minimum Moves to Reach Target Score, 2141. Partition Array into Disjoint Intervals, 921. It needs extra memory which is O(n), where the n represents the length of the input string, to store the information if this char in string has been added. The Earliest Moment When Everyone Become Friends, 1104.

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