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Merge k sorted arrays | Set 1

Last updated: 16 February 2023

Given K sorted arrays of size N each, merge them and print the sorted output.Examples:Input:K = 3, N = 4, arr = { {1, 3, 5, 7},{2, 4, 6, 8},{0, 9, 10, 11}}Output: 0 1 2 3 ...read more

Convert Infix expression to Postfix expression

Last updated: 27 March 2023

Write a program to convert an Infix expression to Postfix form.Infix expression: The expression of the form "a operator b" (a + b) i.e., when an operator is in-between eve...read more

expression-evaluation

DSA

Sieve of Eratosthenes

Last updated: 24 March 2023

Given a number n, print all primes smaller than or equal to n. It is also given that n is a small number.Example:Input : n =10Output : 2 3 5 7Input : n = 20Output: 2 3 5 7...read more

Sorted Array to Balanced BST

Last updated: 05 April 2023

Given a sorted array. Write a function that creates a Balanced Binary Search Tree using array elements.Examples:Input: arr[] = {1, 2, 3}Output: A Balanced BST 2 / \1 ...read more

Detect and Remove Loop in a Linked List

Last updated: 13 March 2023

Write a function detectAndRemoveLoop() that checks whether a given Linked List contains a loop and if the loop is present then remove the loop and return true. If the list...read more

Tortoise-Hare-Approach

DSA

Reverse a Linked List in groups of given size

Last updated: 10 January 2023

Given a linked list, write a function to reverse every k nodes (where k is an input to the function).Example:Input: 1-2-3-4-5-6-7-8-NULL, K = 3Output: 3-2-1-6-5-4-8-7-NULL...read more

Diameter of a Binary Tree

Last updated: 22 September 2023

The diameter/width of a tree is defined as the number of nodes on the longest path between two end nodes.The diagram below shows two trees each with a diameter of nine, th...read more

A program to check if a Binary Tree is BST or not

Last updated: 07 August 2023

A binary search tree (BST) is a node-based binary tree data structure that has the following properties.The left subtree of a node contains only nodes with keys less than ...read more

Write a program to reverse an array or string

Last updated: 14 July 2023

Given an array (or string), the task is to reverse the array/string.Examples :Input : arr[] = {1, 2, 3}Output : arr[] = {3, 2, 1}Input : arr[] = {4, 5, 1, 2}Output : arr...read more

Find the middle of a given linked list

Last updated: 28 March 2023

Auxiliary Given a singly linked list, find the middle of the linked list. For example, if the given linked list is 1-2-3-4-5 then the output should be 3.If there are even ...read more

Python-Data-Structures

DSA

Find the Maximum Depth or Height of given Binary Tree

Last updated: 23 June 2023

Given a binary tree, the task is to find the height of the tree. The height of the tree is the number of edges in the tree from the root to the deepest node.Note: The heig...read more

Largest Sum Contiguous Subarray (Kadane's Algorithm)

Last updated: 22 August 2023

Given an array arr[] of size N. The task is to find the sum of the contiguous subarray within a arr[] with the largest sum.Recommended PracticeSave Your LifeTry It!The ide...read more

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