Top 50 Problems on Recursion Algorithm Last Updated : 29 Mar, 2025 Comments Improve Suggest changes Like Article Like Report Recursion is one of the most essential algorithms that uses the concept of code reusability and repeated usage of the same piece of code. In this post, we have curated an extensive list of interview questions asked around the Recursion Algorithm. The point that makes Recursion one of the most used algorithms is that it forms the base for many other algorithms,such as:Tree traversalsGraph traversalsDivide and Conquer AlgorithmsBacktracking algorithms To learn more about the Recursion Algorithm, Please refer to the Tutorial on Recursion AlgorithmsEasy Problems using RecursionPrint 1 to n without using loopsPrint n to 1 without loopMean of Array Sum of natural numbers Decimal to binary numberSum of array Reverse of a string Length of a string Sum of digit Sum of array using tail recursionFirst n Fibonacci Numbers Factorial of a numberMinimum and Maximum in arrayPalindrome Check Count Set-bits Fibonacci Series in reverse Reverse a Linked List using RecursionMedium Problems using RecursionFlood Fill AlgorithmRemove all adjacent duplicatesSort the QueueReversing a queueBinary to Gray codeDelete a linked listProduct of 2 NumbersPrinting Pyramid PatternsLongest palindromic sub-stringTower of Hanoi AlgorithmTime Complexity of Tower Of HanoiCalculate nCrGeometric sum of the seriesConvert a String to an IntegerDFS traversal of a TreeBottom View of a Binary TreePermutations of given StringSubsets of a given Set or ArrayAll Paths from Top-Left to Bottom-Right of MatrixAll combinations of balanced parenthesesLongest Common Subsequence (LCS)Right View of a Binary TreeHard Problems using RecursionNumber raised to its reverseSort a Stack using RecursionReverse a Doubly linked list All palindromic partitionsScrambled StringsWord Break ProblemAll palindromic partitionsN Queen Problem Sudoku Solver The Knight's tour problemN-digit Numbers with |K| Difference Between Adjacent Digits Josephus ProblemRelated Article:DSA TutorialTop 50 Problems on Stack for InterviewsTop 50 Dynamic Programming Coding Problems for InterviewsTop 50 Problems on Linked List for InterviewsTop 50 Problems on Queue for Interviews Comment More infoAdvertise with us Next Article Top 20 Backtracking Algorithm Interview Questions R RishabhPrabhu Follow Improve Article Tags : Recursion DSA Interview-Questions top-dsa-problems Practice Tags : Recursion Similar Reads SDE SHEET - A Complete Guide for SDE Preparation Here is a curated list of the most popular questions among important topics, such as Programming Languages, Data Structure and Algorithms (DSA), CS Subjects, Aptitude, etc, asked in the Software Development Engineer Interviews. This sheet contains a wide range of coding questions from different Data 8 min read DSA Tutorial - Learn Data Structures and Algorithms DSA (Data Structures and Algorithms) is the study of organizing data efficiently using data structures like arrays, stacks, and trees, paired with step-by-step procedures (or algorithms) to solve problems effectively. Data structures manage how data is stored and accessed, while algorithms focus on 7 min read Top 50 Array Coding Problems for Interviews Array is one of the most widely used data structure and is frequently asked in coding interviews to the problem solving skills. The following list of 50 array coding problems covers a range of difficulty levels, from easy to hard, to help candidates prepare for interviews.Easy ProblemsSecond Largest 2 min read Top 50 Problems on Matrix/Grid Data Structure asked in SDE Interviews A Matrix/Grid is a two-dimensional array that consists of rows and columns. 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To learn about Stack Data Structure in detail, please refer to the Tutorial on Stack Data Structure.Easy ProblemsParenthesis 2 min read Top 50 Problems on Queue Data Structure asked in SDE Interviews A Queue is defined as a linear data structure that is open at both ends and the operations are performed in First In First Out (FIFO) order. We define a queue to be a list in which all additions to the list are made at one end, and all deletions from the list are made at the other end. The element w 3 min read Top 50 Problems on Recursion Algorithm Recursion is one of the most essential algorithms that uses the concept of code reusability and repeated usage of the same piece of code. In this post, we have curated an extensive list of interview questions asked around the Recursion Algorithm. The point that makes Recursion one of the most used a 2 min read Top 20 Backtracking Algorithm Interview Questions Backtracking is a powerful algorithmic technique used to solve problems by exploring all possible solutions in a systematic and recursive manner. It is particularly useful for problems that require searching through a vast solution space, such as combinatorial problems, constraint satisfaction probl 1 min read Top Sorting Interview Questions and Problems Here is the collection of the Top 50 list of frequently asked interview questions on Sorting. Problems in this article are divided into three Levels so that readers can practice according to the difficulty level step by step. Easy Problems Duplicates within k distanceMaximum Perimeter TriangleMaximi 5 min read Like