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OATS Systems

9 posts

C++ Program To Merge Two Sorted Lists (In-Place)

Last Updated: 23 July 2025

Write a C++ program to merge two sorted linked lists into a single sorted linked list in place (i.e. without using extra space).Examples:Input: List1: 5 - 7 - 9, list2: 4 ...read more

Java Program To Merge Two Sorted Lists (In-Place)

Last Updated: 23 July 2025

Given two sorted lists, merge them so as to produce a combined sorted list (without using extra space).Examples:Input: head1: 5->7->9 head2: 4->6->8 Output: 4->5->6...read more

Python Program To Merge Two Sorted Lists (In-Place)

Last Updated: 23 July 2025

Given two sorted lists, merge them so as to produce a combined sorted list (without using extra space).Examples:Input: head1: 5->7->9 head2: 4->6->8 Output: 4->5->6...read more

Python Programs

Javascript Program To Merge Two Sorted Lists (In-Place)

Last Updated: 23 July 2025

Given two sorted lists, merge them so as to produce a combined sorted list (without using extra space).Examples:Input: head1: 5-7-9 head2: 4-6-8 Output: 4-5-6-7-8-9...read more

Merge two sorted lists (in-place)

Last Updated: 02 January 2025

Given two sorted linked lists consisting of n and mnodes respectively. The task is to merge both of the lists and return the head of the merged list.Example:Input: Output...read more

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OATS Systems Interview Experience | Set 1 (On-Campus)

Last Updated: 31 August 2015

There were three rounds.Round 1.It was a written round, questions were from algorithms and DBMS1) Find two rectangles overlap2)Find the k-th non-repeating character in a...read more

Interview Experiences

Find if Two Rectangles Overlap

Last Updated: 03 October 2026

Given two rectangles, find if the given two rectangles overlap or not.A rectangle is denoted by providing the x and y coordinates of two points: the left top corner and th...read more

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square-rectangle

Merge two sorted linked lists

Last Updated: 30 September 2026

Given two sorted linked lists head1 and head2, merge them into a single sorted linked list and return the head of the merged list. The merged list should contain all the n...read more

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First non-repeating character of given string

Last Updated: 07 October 2026

Given a string s consisting of lowercase English Letters. return the first non-repeating character in s. If there is no non-repeating character, return '$'.Examples: Input...read more

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