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Rockstand

9 posts

Detect Cycle in a Directed Graph

Last Updated: 05 April 2025

Given the number of vertices V and a list of directed edges, determine whether the graph contains a cycle or not.Examples: Input: V = 4, edges[][] = [[0, 1], [0, 2], [1, ...read more

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Swap Kth node from beginning with Kth node from end in a Linked List

Last Updated: 10 January 2023

Given a singly linked list, swap kth node from beginning with kth node from end. Swapping of data is not allowed, only pointers should be changed. This requirement may be ...read more

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K’th Smallest Element in Unsorted Array

Last Updated: 14 August 2024

Given an array arr[] of N distinct elements and a number K, where K is smaller than the size of the array. Find the K'th smallest element in the given array. Examples:Inpu...read more

Order-Statistics

Rockstand.in interview experience

Last Updated: 21 January 2015

Recently i applied online at rockstand the process took three days to complete.There were 4 rounds for this process at their office.1st round- shortlisting from resumes. T...read more

Interview Experiences

Union and Intersection of Two Unsorted Arrays - Complete Tutorial

Last Updated: 09 April 2025

Unionof two arrays is an array having alldistinctelements that are present ineither arraywhereasIntersectionof two arrays is an array containingdistinctcommonelements betw...read more

C++ Program For Swapping Kth Node From Beginning With Kth Node From End In A Linked List

Last Updated: 23 December 2021

Given a singly linked list, swap kth node from beginning with kth node from end. Swapping of data is not allowed, only pointers should be changed. This requirement may be ...read more

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Java Program For Swapping Kth Node From Beginning With Kth Node From End In A Linked List

Last Updated: 23 December 2021

Given a singly linked list, swap kth node from beginning with kth node from end. Swapping of data is not allowed, only pointers should be changed. This requirement may be ...read more

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Python Program For Swapping Kth Node From Beginning With Kth Node From End In A Linked List

Last Updated: 19 May 2022

Given a singly linked list, swap kth node from beginning with kth node from end. Swapping of data is not allowed, only pointers should be changed. This requirement may be ...read more

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Python Programs

Javascript Program For Swapping Kth Node From Beginning With Kth Node From End In A Linked List

Last Updated: 02 September 2024

Given a singly linked list, swap kth node from beginning with kth node from end. Swapping of data is not allowed, only pointers should be changed. This requirement may be ...read more

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Web Technologies