Recursive Practice Problems with Solutions Last Updated : 19 Jul, 2025 Comments Improve Suggest changes Like Article Like Report Basics - Recursion Recursive Functions Tail Recursion Strings - Given a string, print all possible palindromic partitions Check if a number is Palindrome Print all possible strings of length k that can be formed from a set of n characters Recursive Implementation of atoi() Find all even length binary sequences with same sum of first and second half bits Print all possible expressions that evaluate to a target String with additive sequence Generate all binary strings without consecutive 1’s Recursive solution to count substrings with same first and last characters All possible binary numbers of length n with equal sum in both halves Combinations in a String of Digits Count consonants in a string (Iterative and recursive methods) Program for length of a string using recursion First uppercase letter in a string (Iterative and Recursive) Partition given string in such manner that i’th substring is sum of (i-1)’th and (i-2)’th substring Power Set in Lexicographic order Function to copy string (Iterative and Recursive) Array - Print all possible combinations of r elements in a given array of size n Print all increasing sequences of length k from first n natural numbers Generate all possible sorted arrays from alternate elements of two given sorted arrays Program to find the minimum (or maximum) element of an array Sum triangle from array Stack - Reverse a stack using recursion Sort a stack using recursion Linked List - Recursive function to delete k-th node from linked list Recursive insertion and traversal linked list Reverse a Doubly linked list using recursion Delete a linked list using recursion Print alternate nodes of a linked list using recursion Recursive approach for alternating split of Linked List Find middle of singly linked list Recursively Practice questions for Linked List and Recursion Binary Tree - Print all leaf nodes of a Binary Tree from left to right Leaf nodes from Preorder of a Binary Search Tree (Using Recursion) Dynamic Programming - Print all longest common sub-sequences in lexicographical order Recursive Tower of Hanoi using 4 pegs / rods Time Complexity Analysis | Tower Of Hanoi (Recursion) Sorting - Recursive Bubble Sort Recursive Insertion Sort Mathematical - Print a pattern without using any loop Print all non-increasing sequences of sum equal to a given number x Print all n-digit strictly increasing numbers Print sums of all subsets of a given set Find ways an Integer can be expressed as sum of n-th power of unique natural numbers Recaman’s sequence 1 to n bit numbers with no consecutive 1s in binary representation Program for Sum the digits of a given number Count ways to express a number as sum of powers Find m-th summation of first n natural numbers Print N-bit binary numbers having more 1’s than 0’s in all prefixes Generate all passwords from given character set Minimum tiles of sizes in powers of two to cover whole area Alexander Bogomolny’s UnOrdered Permutation Algorithm Sum of natural numbers using recursion Decimal to binary number using recursion Sum of digit of a number using recursion Binary to Gray code using recursion Number of non-negative integral solutions of sum equation Product of 2 Numbers using Recursion Print all combinations of factors (Ways to factorize) Recursive program for prime number Programming Puzzles - Program for Chocolate and Wrapper Puzzle N Queen in O(n) space Misc - Mutual Recursion with example of Hofstadter Female and Male sequences Check if a destination is reachable from source with two movements allowed Minimum steps to reach a destination Identify all Grand-Parent Nodes of each Node in a Map C++ program to implement Collatz Conjecture Practice Questions for Recursion | Set 1 Practice Questions for Recursion | Set 2 Practice Questions for Recursion | Set 3 Practice Questions for Recursion | Set 4 Practice Questions for Recursion | Set 5 Practice Questions for Recursion | Set 6 Practice Questions for Recursion | Set 7 Category Archives: Recursion (Recent articles based on Recursion) Practice Problems on Geeks for Geeks! Comment More infoAdvertise with us Next Article Types of Asymptotic Notations in Complexity Analysis of Algorithms K kartik Follow Improve Article Tags : DSA tail-recursion Similar Reads Basics & PrerequisitesTime Complexity and Space ComplexityMany times there are more than one ways to solve a problem with different algorithms and we need a way to compare multiple ways. Also, there are situations where we would like to know how much time and resources an algorithm might take when implemented. To measure performance of algorithms, we typic 13 min read Types of Asymptotic Notations in Complexity Analysis of AlgorithmsWe have discussed Asymptotic Analysis, and Worst, Average, and Best Cases of Algorithms. The main idea of asymptotic analysis is to have a measure of the efficiency of algorithms that don't depend on machine-specific constants and don't require algorithms to be implemented and time taken by programs 8 min read Data StructuresGetting Started with Array Data StructureArray is a collection of items of the same variable type that are stored at contiguous memory locations. It is one of the most popular and simple data structures used in programming. Basic terminologies of ArrayArray Index: In an array, elements are identified by their indexes. Array index starts fr 14 min read String in Data StructureA string is a sequence of characters. The following facts make string an interesting data structure.Small set of elements. Unlike normal array, strings typically have smaller set of items. For example, lowercase English alphabet has only 26 characters. ASCII has only 256 characters.Strings are immut 2 min read Hashing in Data StructureHashing is a technique used in data structures that efficiently stores and retrieves data in a way that allows for quick access. Hashing involves mapping data to a specific index in a hash table (an array of items) using a hash function. It enables fast retrieval of information based on its key. The 2 min read Linked List Data StructureA linked list is a fundamental data structure in computer science. It mainly allows efficient insertion and deletion operations compared to arrays. Like arrays, it is also used to implement other data structures like stack, queue and deque. Here’s the comparison of Linked List vs Arrays Linked List: 2 min read Stack Data StructureA Stack is a linear data structure that follows a particular order in which the operations are performed. The order may be LIFO(Last In First Out) or FILO(First In Last Out). LIFO implies that the element that is inserted last, comes out first and FILO implies that the element that is inserted first 2 min read Queue Data StructureA Queue Data Structure is a fundamental concept in computer science used for storing and managing data in a specific order. It follows the principle of "First in, First out" (FIFO), where the first element added to the queue is the first one to be removed. It is used as a buffer in computer systems 2 min read Tree Data StructureTree Data Structure is a non-linear data structure in which a collection of elements known as nodes are connected to each other via edges such that there exists exactly one path between any two nodes. Types of TreeBinary Tree : Every node has at most two childrenTernary Tree : Every node has at most 4 min read Graph Data StructureGraph Data Structure is a collection of nodes connected by edges. It's used to represent relationships between different entities. If you are looking for topic-wise list of problems on different topics like DFS, BFS, Topological Sort, Shortest Path, etc., please refer to Graph Algorithms. Basics of 3 min read Trie Data StructureThe Trie data structure is a tree-like structure used for storing a dynamic set of strings. It allows for efficient retrieval and storage of keys, making it highly effective in handling large datasets. Trie supports operations such as insertion, search, deletion of keys, and prefix searches. In this 15+ min read AlgorithmsSearching AlgorithmsSearching algorithms are essential tools in computer science used to locate specific items within a collection of data. In this tutorial, we are mainly going to focus upon searching in an array. When we search an item in an array, there are two most common algorithms used based on the type of input 2 min read Sorting AlgorithmsA Sorting Algorithm is used to rearrange a given array or list of elements in an order. For example, a given array [10, 20, 5, 2] becomes [2, 5, 10, 20] after sorting in increasing order and becomes [20, 10, 5, 2] after sorting in decreasing order. There exist different sorting algorithms for differ 3 min read Introduction to RecursionThe process in which a function calls itself directly or indirectly is called recursion and the corresponding function is called a recursive function. A recursive algorithm takes one step toward solution and then recursively call itself to further move. The algorithm stops once we reach the solution 14 min read Greedy AlgorithmsGreedy algorithms are a class of algorithms that make locally optimal choices at each step with the hope of finding a global optimum solution. At every step of the algorithm, we make a choice that looks the best at the moment. To make the choice, we sometimes sort the array so that we can always get 3 min read Graph AlgorithmsGraph is a non-linear data structure like tree data structure. The limitation of tree is, it can only represent hierarchical data. For situations where nodes or vertices are randomly connected with each other other, we use Graph. Example situations where we use graph data structure are, a social net 3 min read Dynamic Programming or DPDynamic Programming is an algorithmic technique with the following properties.It is mainly an optimization over plain recursion. Wherever we see a recursive solution that has repeated calls for the same inputs, we can optimize it using Dynamic Programming. The idea is to simply store the results of 3 min read Bitwise AlgorithmsBitwise algorithms in Data Structures and Algorithms (DSA) involve manipulating individual bits of binary representations of numbers to perform operations efficiently. These algorithms utilize bitwise operators like AND, OR, XOR, NOT, Left Shift, and Right Shift.BasicsIntroduction to Bitwise Algorit 4 min read AdvancedSegment TreeSegment Tree is a data structure that allows efficient querying and updating of intervals or segments of an array. It is particularly useful for problems involving range queries, such as finding the sum, minimum, maximum, or any other operation over a specific range of elements in an array. The tree 3 min read Pattern SearchingPattern searching algorithms are essential tools in computer science and data processing. These algorithms are designed to efficiently find a particular pattern within a larger set of data. Patten SearchingImportant Pattern Searching Algorithms:Naive String Matching : A Simple Algorithm that works i 2 min read GeometryGeometry is a branch of mathematics that studies the properties, measurements, and relationships of points, lines, angles, surfaces, and solids. From basic lines and angles to complex structures, it helps us understand the world around us.Geometry for Students and BeginnersThis section covers key br 2 min read Interview PreparationInterview Corner: All Resources To Crack Any Tech InterviewThis article serves as your one-stop guide to interview preparation, designed to help you succeed across different experience levels and company expectations. Here is what you should expect in a Tech Interview, please remember the following points:Tech Interview Preparation does not have any fixed s 3 min read GfG160 - 160 Days of Problem SolvingAre you preparing for technical interviews and would like to be well-structured to improve your problem-solving skills? Well, we have good news for you! GeeksforGeeks proudly presents GfG160, a 160-day coding challenge starting on 15th November 2024. In this event, we will provide daily coding probl 3 min read Practice ProblemGeeksforGeeks Practice - Leading Online Coding PlatformGeeksforGeeks Practice is an online coding platform designed to help developers and students practice coding online and sharpen their programming skills with the following features. GfG 160: This consists of most popular interview problems organized topic wise and difficulty with with well written e 6 min read Problem of The Day - Develop the Habit of CodingDo you find it difficult to develop a habit of Coding? If yes, then we have a most effective solution for you - all you geeks need to do is solve one programming problem each day without any break, and BOOM, the results will surprise you! Let us tell you how:Suppose you commit to improve yourself an 5 min read Like