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Delta X Interview Questions and Answers

Last Updated : 08 Jan, 2024
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Aspiring software engineers seeking to crack the code of success at DeltaX, buckle up! This article dissects the interviews at DeltaX, offering an exclusive guide to the frequently asked questions across key technical areas: Data Structures and algorithms (DSA), Database Management Systems (DBMS), Object-Oriented Programming (OOP), Computer Networking (CN)and Operating Systems (OS). Whether you’re navigating complex tree traversals, crafting efficient SQL queries, mastering inheritance principles, or understanding memory management, this insider insight will equip you with the knowledge and confidence to conquer your DeltaX interview. Dive in, sharpen your skills, and get ready to ace your path to becoming a DeltaXian!



DSA Problems



Print K largest(or smallest) elements in an array Solve
Check if two arrays are equal or not Solve
Find the Missing Number Solve
Inversion count in Array using Merge Sort Solve
Merge two sorted arrays Solve
Equilibrium index of an array Solve
Median of two Sorted Arrays of Different Sizes Solve
Searching in Binary Search Tree (BST) Solve
Binary Heap Operations Solve
Convert a given tree to its Sum Tree Solve
Segment Tree | Sum of given range Solve
Find the element that appears once Solve
Binary Search – Data Structure and Algorithm Tutorials Solve
Detect cycle in an undirected graph Solve
Topological Sort Solve
Strongly Connected Components in a Graph Solve
How to find Shortest Paths from Source to all Vertices using Dijkstra’s Algorithm Solve
Minimum number of nodes to be selected to light up all the edges of the tree (Select Nodes) Solve
Floyd-Warshall Algorithm Solve
Minimum Spanning Tree Solve
Total number of Spanning Trees in a Graph Solve
Minimum Initial Points to Reach Destination Solve
Longest Common Subsequence Solve
Edit Distance Solve
Minimum Sum Path in a Triangle Solve
Count number of coins required to make a given value (Coin Change II) Solve
The Painter’s Partition Problem Solve
Rod Cutting Problem Solve
Matrix Chain Multiplication | DP-8 Solve
Huffman Coding | Greedy Algo-3 Solve
Find Subarray with given sum | Set 1 (Non-negative Numbers) Solve
Smallest subarray with sum greater than x Solve
N-Queens Problem Solve
Find i’th Index character in a binary string obtained after n iterations Solve
Rabin-Karp Algorithm for Pattern Searching Solve
Trie | (Insert and Search) Solve
Count of strings whose prefix match with the given string to a given length k Solve
Partition problem | DP-18 Solve
Matrix Chain Multiplication Solve
Tarjan’s Algorithm to find Strongly Connected Components Solve
Insertion in an AVL Tree Solve
K’th largest element in a stream Solve
Longest Increasing Subsequence (LIS) Solve
Program for array left rotation by d positions. Solve
Stock Buy Sell to Maximize Profit Solve
0/1 Knapsack Problem Solve
Trapping Rain Water Solve
Word Break Problem | DP-32 Solve
Wildcard Pattern Matching Solve
Implementing Regular Expression Matching Solve

Operating System

An Operating System(OS) is software that manages and handles the hardware and software resources of a computer system. It provides interaction between users of computers and computer hardware.


Database Management System is a software or technology used to manage data from a database. Some popular databases are MySQL, Oracle, MongoDB, etc.

Computer Networks

A computer network is a collection of computers or devices connected to share resources. Any device which can share or receive the data is called a Node.


Object-oriented programming – As the name suggests uses objects in programming. Object-oriented programming aims to implement real-world entities like inheritance, hiding, polymorphism, etc. in programming.

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