Hike

99 posts

Last Updated: 14 November 2024

Given an array of positive integers arr[] of size n, the task is to find second largest distinct element in the array.Note: If the second la...read more

Arrays

Order-Statistics

Accolite

Zoho

2 Sum - Count pairs with given sum

Last Updated: 21 October 2024

Given an array arr[] of n integers and a target value, the task is to find the number of pairs of integers in the array whose sum is equal t ...read more

Minimum Platforms Required for Given Arrival and Departure Times

Last Updated: 02 September 2024

We are given two arrays that represent the arrival and departure times of trains, the task is to find the minimum number of platforms requir ...read more

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Optimal Strategy for a Game

Last Updated: 11 November 2024

Given an arrayarr[]of sizen which represents a row of n coins of values V1 . . . Vn, where n is even. We play a game against an opponent by ...read more

Stock Buy and Sell - Multiple Transaction Allowed

Last Updated: 15 November 2024

Given an array prices[] of size n denoting the cost of stock on each day, the task is to find the maximum total profit if we can buy and sel...read more

Longest Common Subsequence (LCS)

Last Updated: 02 November 2024

Given two strings, s1 and s2, the task is to find the length of the Longest Common Subsequence. If there is nocommon subsequence, return0. A...read more

Sort an array of 0s, 1s and 2s - Dutch National Flag Problem

Last Updated: 14 October 2024

Given an array arr[] consisting of only 0s, 1s, and 2s. The task is to sort the array, i.e., put all 0s first, then all 1s and all 2s in las...read more

Reverse a Linked List in groups of given size

Last Updated: 12 September 2024

Given aSingly linked listcontainingnnodes. The task is toreverseevery group ofknodes in the list.If the number of nodes is not a multiple of...read more

Valid Parentheses in an Expression

Last Updated: 16 September 2024

Given an expression string s, write a program to examine whether the pairs and the orders of "{", "}", "(", ")", "[", "]" are correct in the...read more

Maximum Difference between Two Elements such that Larger Element Appears after the Smaller Element

Last Updated: 23 November 2023

Given an array arr[] of integers, find out the maximum difference between any two elements such that larger element appears after the smalle ...read more

Search in a sorted and rotated Array

Last Updated: 05 September 2024

Given a sorted and rotated array arr[] of n distinct elements, the task is to find the index of given key in the array. If the key is not pr ...read more

Program for Nth node from the end of a Linked List

Last Updated: 01 August 2024

Given a Linked List of M nodes and a number N, find the value at the Nth node from the end of the Linked List. If there is no Nth node from ...read more

Find Middle of the Linked List

Last Updated: 04 September 2024

Given a singly linked list, the task is to find the middle of the linked list. If the number of nodes are even, then there would be two midd...read more

Maximum Subarray Sum - Kadane's Algorithm

Last Updated: 11 September 2024

Given an array arr[], the task is to find the subarray that has the maximum sum and return its sum.Examples:Input: arr[] = {2, 3, -8, 7, -1,...read more

Pair with given Sum (Two Sum)

Last Updated: 22 October 2024

Given an array arr[] of n integers and a target value, the task is to find whether there is a pair of elements in the array whose sum is equ...read more

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