Recursion

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Binary Search Tree (BST) Traversals – Inorder, Preorder, Post Order

Last Updated: 21 August 2024

Given a Binary Search Tree, The task is to print the elements in inorder, preorder, and postorder traversal of the Binary Search Tree. Inpu...read more

Binary Search Tree

Recursion

Tree Traversals

Picked

DSA

Height and Depth of a node in a Binary Tree

Last Updated: 03 April 2025

Given a Binary Tree consisting of n nodes and a integer k, the task is to find the depth and height of the node with value k in the Binary T...read more

Print all permutations of a string in Java

Last Updated: 08 December 2022

Given a string str, the task is to print all the permutations of str. A permutation is an arrangement of all or part of a set of objects, wi ...read more

Permutation and Combination

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Generating All Subarrays

Last Updated: 07 February 2025

Given an array arr[], the task is to generate all the possible subarrays of the given array.Examples:Input: arr[] = [1, 2, 3]Output: [ [1], ...read more

Technical Scripter 2018

DSA

Sum of digit of a number using recursion

Last Updated: 17 March 2025

Given a number, we need to find sum of its digits using recursion.Examples:Input: 12345Output: 15Explanation: Sum of digits → 1 + 2 + 3 + ...read more

number-digits

Recursion

DSA

Program to find the minimum (or maximum) element of an array

Last Updated: 10 April 2025

Given an array, write functions to find the minimum and maximum elements in it.Examples:Input: arr[] = [1, 423, 6, 46, 34, 23, 13, 53, 4]Out ...read more

Basic Coding Problems

Combination Sum

Last Updated: 28 January 2025

Given an array of distinct integers arr[] and an integer target, the task is to find a list of all unique combinations of array where the s ...read more

Recursive Programs to find Minimum and Maximum elements of array

Last Updated: 19 September 2023

Given an array of integers arr, the task is to find the minimum and maximum element of that array using recursion.Examples :Input: arr = {1, ...read more

Recursive function to check if a string is palindrome

Last Updated: 11 May 2025

Given a string s, the task is to check if it is a palindrome or not.Examples:Input: s = "abba"Output: YesExplanation: s is a palindromeInput ...read more

Recursive Bubble Sort

Last Updated: 10 January 2023

Background :Bubble Sort is the simplest sorting algorithm that works by repeatedly swapping the adjacent elements if they are in wrong order ...read more

Sorting

Recursion

DSA

Sort a Stack using Recursion

Last Updated: 26 April 2025

Given a stack, the task is to sort it using recursion.Example:Input: [3 2 1]Output: [3 2 1]Explanation: The given stack is sorted know 3 2 ...read more

Print all Palindromic Partitions of a String using Backtracking

Last Updated: 21 April 2025

Given a string, find all possible palindromic partitions of given string.Note that this problem is different from Palindrome Partitioning Pr ...read more

What is Tail Recursion

Last Updated: 12 March 2025

Tail recursion is defined as a recursive function in which the recursive call is the last statement that is executed by the function. So bas ...read more

Analysis of Algorithms

Level order traversal in spiral form

Last Updated: 06 May 2025

Given a binary tree and the task is to find the spiral order traversal of the tree and return the list containing the elements.Spiral order ...read more

Print reverse of a string using recursion

Last Updated: 06 March 2025

Given a string, the task is to print the given string in reverse order using recursion.Examples:Input: s = "Geeks for Geeks"Output: "skeeG r ...read more