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Program to Find GCD or HCF of Two Numbers

Last Updated: 09 November 2023

Given two numbers a and b, the task is to find the GCD of the two numbers.Note: GCD (Greatest Common Divisor) or HCF (Highest Common Factor) of two numbers is the largest ...read more

Basic Coding Problems

Binary Search - Data Structure and Algorithm Tutorials

Last Updated: 26 July 2023

Binary Search is defined as a searching algorithm used in a sorted array by repeatedly dividing the search interval in half. The idea of binary search is to use the inform...read more

QuickSort - Data Structure and Algorithm Tutorials

Last Updated: 16 October 2023

QuickSort is a sorting algorithm based on the Divide and Conquer algorithm that picks an element as a pivot and partitions the given array around the picked pivot by placi...read more

Stock Buy Sell to Maximize Profit

Last Updated: 13 July 2023

The cost of a stock on each day is given in an array. Find the maximum profit that you can make by buying and selling on those days. If the given array of prices is sorted ...read more

Heap Sort - Data Structures and Algorithms Tutorials

Last Updated: 25 July 2023

Heap sort is a comparison-based sorting technique based on Binary Heap data structure. It is similar to the selection sort where we first find the minimum element and plac...read more

Minimum number of jumps to reach end (Jump Game)

Last Updated: 20 October 2023

Given an array arr[] where each element represents the max number of steps that can be made forward from that index. The task is to find the minimum number of jumps to rea ...read more

Sort an array of 0s, 1s and 2s | Dutch National Flag problem

Last Updated: 03 August 2023

Given an array A[] consisting of only 0s, 1s, and 2s. The task is to write a function that sorts the given array. The functions should put all 0s first, then all 1s and al...read more

Reverse words in a given string

Last Updated: 13 September 2023

Given a string, the task is to reverse the order of the words in the given string.Examples:Input: s = "geeks quiz practice code"Output: s = "code practice quiz geeks"Input...read more

Program for array left rotation by d positions.

Last Updated: 06 October 2023

Given an array of integers arr[] of size N and an integer, the task is to rotate the array elements to the left by d positions.Examples: Input:arr[] = {1, 2, 3, 4, 5, 6, 7...read more

Search an element in a sorted and rotated Array

Last Updated: 20 July 2023

Given a sorted and rotated array arr[] of size N and a key, the task is to find the key in the array.Note: Find the element in O(logN) time and assume that all the element ...read more

Reverse a Linked List

Last Updated: 21 November 2022

Given a pointer to the head node of a linked list, the task is to reverse the linked list. We need to reverse the list by changing the links between nodes.Examples:Input: ...read more

Check if pair with given Sum exists in Array (Two Sum)

Last Updated: 14 August 2023

Given an array A[] of n numbers and another number x, the task is to check whether or not there exist two elements in A[] whose sum is exactly x.Examples:Input: arr[] = {0 ...read more

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