SDE SHEET – A Complete Guide for SDE Preparation
Last Updated :
17 Jan, 2025
Here is a curated list of the most popular questions among important topics, such as Programming Languages, Data Structure and Algorithms (DSA), CS Subjects, Aptitude, etc, asked in the Software Development Engineer Interviews.
- This sheet contains a wide range of coding questions from different Data Structures and Algorithms.
- It covers all the segments round-wise like MCQs, DSA (Coding Questions), CS Subjects, Puzzles, System Design, Projects.
- It is helpful for both Students and Experienced.
Data Structures and Algorithms:
Below are the list of top problems topic wise:
Arrays
Searching and Sorting
Hashing
Matrix
String
Recursion and Backtracking
Bit Manipulation
Stack and Queue
Linked List
Binary Tree
Binary Search Tree
Greedy Approach
Dynamic Programming
Heap
| Question |
Article |
Practice |
Video |
| Heap Sort |
View |
Solve |
Watch |
| Find median in a stream |
View |
Solve |
Watch |
| Operations on Binary Min Heap |
View |
Solve |
Watch |
| Rearrange characters |
View |
Solve |
Watch |
| Merge K sorted Linked lists |
View |
Solve |
Watch |
| Kth smallest element in a row-column wise sorted matrix |
View |
Solve |
Watch |
Graph
Trie
| Question |
Article |
Practice |
Video |
| Trie | (Insert and Search) |
View |
Solve |
Watch |
| Trie | (Delete) |
View |
Solve |
Watch |
| Print unique rows in a given Binary matrix |
View |
Solve |
Watch |
| Counting the number of words in a Trie |
View |
Solve |
Watch |
| Longest Common Prefix using Trie |
View |
Solve |
Watch |
| Auto-complete feature using Trie |
View |
Solve |
Watch |
| Boggle | Set 2 (Using Trie) |
View |
Solve |
Watch |
| Minimum XOR Value Pair |
View |
Solve |
Watch |
| Palindrome pair in an array of words (or strings) |
View |
Solve |
Watch |
Computer Science Subjects:
1. Operating System
An operating system acts as an intermediary between the user of a computer and computer hardware. The purpose of an operating system is to provide an environment in which a user can execute programs conveniently and efficiently. Below links contains complete Operating System Study Material:
2. DBMS
Database is a collection of inter-related data which helps in efficient retrieval, insertion and deletion of data from database and organizes the data in the form of tables, Links, schemas, reports etc. Below Links contains complete DBMS study Material:
3. SQL
SQL stands for Structured Query Language. It is a language used to interact with the database, i.e to create a database, to create a table in the database, to retrieve data or update a table in the database. Below Links contains complete SQL study Material:
4. Computer Networks
A computer network is a system that connects numerous independent computers in order to share information (data) and resources. The integration of computers and other different devices allows users to communicate more easily. Below Links contains complete Computer Networks study Material:
Puzzles:
Puzzles are one of the ways to check your problem-solving skills. These are tricky questions that let you think logically.
Try to solve the 20 most popular puzzles asked in Interviews
Projects:
Thoroughly revise all the work you have done till now in your projects. The grilling about projects can sometimes be very deep. Also, choose your words before you speak. Mention only those topics where you think you are fine to be grilled upon.
If you haven’t made a project then take an idea from GfG Projects and start working on these.
System Design:
System Design is the process of designing the architecture, components, and interfaces for a system so that it meets the end-user requirements. System Design for tech interviews is something that can’t be ignored especially for experienced people Almost every IT giant whether it be Facebook, Amazon, Google, or any other ask various questions based on System Design concepts such as scalability, load-balancing, caching, etc. in the interview.
Please refer System Design tutorial that will help you to learn and master System Design concepts in the most efficient way from basics to advanced level.
Bonus SDE Sheets:
You can prepare for several types of interviews here. For instance, if you want to prepare for a Google interview, we have an SDE sheet specifically designed for that purpose. Here we attached the links to the top 5 product based and top 5 Service based preparation SDE Sheets.
Similar Reads
SDE SHEET - A Complete Guide for SDE Preparation
Here is a curated list of the most popular questions among important topics, such as Programming Languages, Data Structure and Algorithms (DSA), CS Subjects, Aptitude, etc, asked in the Software Development Engineer Interviews. This sheet contains a wide range of coding questions from different Data
7 min read
DSA Tutorial - Learn Data Structures and Algorithms
DSA (Data Structures and Algorithms) is the study of organizing data efficiently using data structures like arrays, stacks, and trees, paired with step-by-step procedures (or algorithms) to solve problems effectively. Data structures manage how data is stored and accessed, while algorithms focus on
7 min read
Top 50 Array Coding Problems for Interviews
Array is one of the most widely used data structure and is frequently asked in coding interviews to the problem solving skills. The following list of 50 array coding problems covers a range of difficulty levels, from easy to hard, to help candidates prepare for interviews. Easy Problems Second Large
2 min read
Top 50 Problems on Matrix/Grid Data Structure asked in SDE Interviews
A Matrix/Grid is a two-dimensional array that consists of rows and columns. It is an arrangement of elements in horizontal or vertical lines of entries. Here is the collection of the Top 50 list of frequently asked interviews question on Matrix/Grid in the SDE Interviews. Problems in this Article ar
3 min read
Top 50 String Coding Problems for Interviews
Here is the collection of the Top 50 list of frequently asked interview questions on Strings. Problems in this Article are divided into three Levels so that readers can practice according to the difficulty level step by step. Level 1Problems Solve Reverse words in a given stringSolveLongest Common
2 min read
Top 50 Problems on Stack Data Structure asked in SDE Interviews
A Stack is a linear data structure in which the insertion of a new element and removal of an existing element takes place at the same end represented as the top of the stack. To learn about Stack Data Structure in detail, please refer to the Tutorial on Stack Data Structure. Given below are the most
3 min read
Top 50 Problems on Queue Data Structure asked in SDE Interviews
A Queue is defined as a linear data structure that is open at both ends and the operations are performed in First In First Out (FIFO) order. We define a queue to be a list in which all additions to the list are made at one end, and all deletions from the list are made at the other end. The element w
3 min read
Top 50 Problems on Recursion Algorithm asked in SDE Interviews
Recursion is one of the most essential algorithms which uses the concept of code reusability and repeated usage of the same piece of code. In this post, we have curated an extensive list of interview questions asked around the Recursion Algorithm. The point which makes Recursion one of the most used
3 min read
Top 20 Backtracking Algorithm Interview Questions
N Queens ProblemWarnsdorff's AlgorithmWord Break ProblemRemove Invalid ParenthesisMatch a pattern and string using regular expressionFind Path from corner cell to middle cell in a mazeHamiltonian cycleSudokuM Coloring ProblemRat in a MazePrint all permutations of a given stringCrptarithmetic puzzleF
1 min read
Top Sorting Interview Questions and Problems
Here is the collection of the Top 50 list of frequently asked interview questions on Sorting. Problems in this article are divided into three Levels so that readers can practice according to the difficulty level step by step. Sorting Interview Question and Answers:Question 1: What is a sorting algo
6 min read
Top 50 Problems on Linked List Data Structure asked in SDE Interviews
A Linked List is a linear data structure that looks like a chain of nodes, where each node is a different element. Unlike Arrays, Linked List elements are not stored at a contiguous location. Here is the collection of the Top 50 list of frequently asked interview questions on Linked Lists. Problems
3 min read
Top 20 Hashing Technique based Interview Questions
Find whether an array is subset of another arrayUnion and Intersection of two Linked ListsFind a pair with given sumFind Itinerary from a given list of ticketsFind four elements a, b, c and d in an array such that a+b = c+dFind the largest subarray with 0 sumCount distinct elements in every window o
1 min read
Top 50 Tree Coding Problems for Interviews
Here is the collection of the Top 50 list of frequently asked interview questions on Tree. Problems in this Article are divided into three Levels so that readers can practice according to the difficulty level step by step. Level 1Problems Solve Height of Binary TreeSolveDetermine if two trees are id
2 min read
Top 50 Problems on Heap Data Structure asked in SDE Interviews
A Heap is a special Tree-based Data Structure in which the tree is a complete binary tree. Generally, heaps are of two types: Max-Heap and Min-Heap. To know more about this Data Structure in-depth refer to the Tutorial on Heap Data-Structure. Given below are the most frequently asked interview quest
2 min read
Top 50 Graph Coding Problems for Interviews
Here is the collection of the Top 50 list of frequently asked interview questions on Graph. Problems in this Article are divided into three Levels so that readers can practice according to the difficulty level step by step. Level 1Problems Solve Print Adjacency ListSolveBFS of GraphSolveDFS of Graph
2 min read
Top 20 Greedy Algorithms Interview Questions
Greedy is an algorithmic paradigm that builds up a solution piece by piece, always choosing the next piece that offers the most obvious and immediate benefit. Greedy algorithms are used for optimization problems. Activity Selection ProblemKruskal’s Minimum Spanning Tree AlgorithmHuffman CodingEffici
1 min read
Top 50 Dynamic Programming Coding Problems for Interviews
Here is the collection of the Top 50 list of frequently asked interview questions on Dynamic Programming. Problems in this Article are divided into three Levels so that readers can practice according to the difficulty level step by step. Level 1: Dynamic Programming Coding Problems for InterviewsPro
2 min read
