⁠Activity Diagram - Get SDE Ready

Data Structures & Algorithms

Number Theory

0/19

Number of Common Factors

Add Two Integers

Product of factors of number

Sieve of Eratosthenes

Prime Numbers and Primality Check

Sieve of Eratosthenes

Binary Exponentiation

Modulo Arithmetic

nCr Computations using inverse modulo

Find all factorial numbers less than or equal to N

GCD, LCM and Distributive Property

Product of Prime Factors

Find Prime numbers in a range

HackerRank Test

Math

0/15

Excel Sheet Column Title

Reverse Integer

Factorial Trailing Zeroes

Palindrome Number

Fibonacci Number

Check If It Is a Straight Line

Count Days Spent Together

Minimum Sum of Four Digit Number After Splitting Digits

Day of the Year

Subtract the Product and Sum of Digits of an Integer

Prime Arrangements

HackerRank Test

Bit Manipulation

0/15

XOR Operation in an Array

Sum of All Subset XOR totals

Convert a number to hexadecimal

Prime Number of Set Bits in Binary Representation

Maximum XOR of Two Numbers in an Array

XOR Queries of a Subarray

Total Hamming Distance

Single Number II

Find Sum Of Different Corresponding Bits For All Pairs

Divide Two Integers

Single Number iii

Bitwise ORs of Subarrays

Bit Manipulation Quiz

HackerRank Test

Searching (Beginner)

0/17

Intersection of Two Array II

Count Negative Numbers in a Sorted Matrix

Check if Array is Sorted and Rotated

Find Peak Element

Single Element in a Sorted Array

Minimum Swaps to Sort

Search in Rotated Sorted Array

Minimum Size Subarray Sum

Maximum Height Of The Staircase

Median Of Two Sorted Arrays

Search in Rotated Sorted Array II

HackerRank Test

Searching (Advanced)

0/14

Most Profit Assigning Work

Ways to Split Array Into Three Subarrays

Plates between Candles

Aggressive Cows

Smallest Good Base

Nth Magical Number

Painters Partition Problem

Find Minimum In Rotated Sorted Array

HackerRank Test

Recursion

0/15

Fibonacci Number

Merge Two Sorted Lists

All Unique Permutations

Combination Sum

Combination Sum ii

Permutation Sequence

Find the Winner of the Circular Game

HackerRank Test

Backtracking

0/13

Sum of All Subset XOR Totals

Letter Tile Possibilities

Generate Parantheses

Unique Paths III

Permutations II

Number Of Squareful Arrays

Palindrome Partitioning

Numbers With Same Consecutive Differences

Backtracking Quiz

HackerRank Test

Sorting (Beginner)

0/13

Third Largest Number

Sort Array By Parity II

How Many Numbers are smaller than the current Number?

Fair Candy Swap

K Closest Points to Origin

Maximum Difference

Maximum Difference Between Increasing Elements

Number of sextuplets

Chocolate Distribution Problem

Sum Special Triplets Elements 3 Arrays

Find Right Interval

Sorting Algorithms Quiz

HackerRank Test

Sorting (Advanced)

0/13

Find the Distance value between Two Arrays

Merge Similar items

Split with Minimum Sum

Sort Even and Odd Indices Independently

Count of smaller numbers after self

Count of Range Sum

Lexicographically largest permutation of the array such that a[i] = a[i-1] + gcd(a[i-1], a[i-2])

Possible Arrangement Of Persons Waiting To Sit In A Hall

Inversion count in an array

Max Chunks To Make Sorted II

Reducing Dishes

HackerRank Test

Two Pointer

0/15

Find the Index of the First Occurrence in a String

Is Subsequence?

Check if N and its Double exist

Squares of a Sorted Array

Count of pairs with the given sum

Minimum Size Subarray Sum

Minimize the absolute difference

Smallest sequence with given Primes

Container With Most Water

Given Two Sorted Arrays Number X Find Pair Whose Sum Closest X

Counting Triangles

Trapping Rain Water

Longest Chunked Palindrome Decomposition

Two-Pointer Approach Quiz

HackerRank Test

Hashing (Beginner)

0/14

Find the Difference

Fair Candy Swap

Maximum Number of Ballons

Subarray with 0 sum

Subarray Sum Equals K

Largest Continuous Sequence Zero Sum

Longest Consecutive Sequence

Set Matrix Zeros

Find Pairs In Array Whose Sums Already Exist In Array

Hashing (Advanced)

0/13

Check if N and its Double exist

How many Numbers are Smaller than the current number

Sum of Unique Elements

Decode the Message

Palindrome Pairs

Longest Substring Without Repeat

Points on same line

Grid Illumination

Find rectangle with corners as 1

Random Pick with Blacklist

HackerRank Test

Strings

0/14

Repeated Substring Pattern

Valid Palindrome II

Find Common characters

Check if a word occurs as a Prefix of any word in a sentence

Day of the Year

Longest Common Prefix

Compare Version Numbers

Reverse the String

Implement Strstr

Integer To Roman

Roman To Integer

String Operations Quiz

HackerRank Test

Stacks

0/13

Valid Parentheses

Next Greater Element I

Number of Students unable to eat Lunch

Remove all Adjacent Duplicates in String

Evaluate Expression

Largest Rectangle in Histogram

Trapping Rain Water

Nearest Smaller Element

Brace Expansion II

Maximal Rectangle

Stack Operations Quiz

HackerRank Test

Queues

0/14

Implement Stack using Queues

First Unique Character in a String

Implement Queue using Stacks

Time needed to Buy Tickets

Sum of min and max

Reversing the first K elements of a Queue

N integers containing only 1, 2 & 3

Sliding Window Maximum

Given A String Find Its First Non Repeating Character

Max Value of Equation

Shortest Subarray with Sum at Least K

HackerRank Test

Linked List (Beginner)

0/10

Merge Two Sorted Lists

Palindrome Linked List

Intersection of Two Linked Lists

Middle of the Linked List

Remove Nth Node From End of List

Reverse Linked List Ii

Populating Next Right Pointers in Each Node

Linked List Quiz

HackerRank Test

Linked List (Advanced)

0/12

Remove Duplicates from Sorted List

Linked List Cycle

Merge Two Sorted Lists

Flatten a Multilevel Doubly Linked List

Clone a Linked List

Intersection of Linked Lists

Remove Duplicates From Sorted List ii

Remove Duplicates From Sorted List

Length Longest Palindrome List Linked List Using O(1) Extra Space

Design a Text Editor

Linked List Quiz 2

Trees (Beginner)

0/12

Maximum Depth of Binary Tree

Binary Tree Inorder Traversal

Binary Tree Preorder Traversal

Binary Tree Postorder Traversal

Binary Tree From Inorder And Postorder

Balanced Binary Tree

Check Tree Traversal

Binary Tree Zigzag Level Order Traversal

Construct Binary Tree From Preorder And Inorder Traversal

Populating Next Right Pointers in Each Node

HackerRank Test

Trees (Intermediate)

0/12

Invert Binary Tree

Binary Tree Tilt

Evaluate Boolean Binary Tree

Vertical Order traversal

Binary Tree Right Side View

2-Sum Binary Tree

Boundary Traversal Of Binary Tree

Add One Row to Tree

Serialize and Deserialize Binary Tree

Trees & BST

0/18

Convert Sorted Array to BST

Find Mode in BST

Minimum Absolute difference in BST

Two Sum IV – Input is a BST

Search in a BST

Kth Largest Element in a Stream

Recover Binary Search Tree

Sorted Array To Balanced BST

Left view of binary tree

Least Common Ancestor

Invert the Binary Tree

Valid Binary Search Tree

Binary Tree to CDLL

Sum Root To Leaf Numbers

Symmetric Binary Tree

Identical Binary Trees

BST (Advanced)

0/11

Minimum Distance between BST nodes

Increasing order BST

Range Sum of BST

Leaf nodes from Preorder of a Binary Search Tree

Odd even level difference

Minimum Distance between Nodes of BST

Boundary Traversal Of Binary Tree

2sum Binary Tree

Binary Tree Paths

All Nodes Distance K In Binary Tree

Binary Search Tree (BST) Quiz

Heap

0/14

Take Gifts from the Richest Pile

Delete greatest value in each row

Make Array zero by Subtracting equal amounts

Minimum amount of time to fill cups

N max pair combinations

Kth Largest Element in an Array

Merge k Sorted Lists

B Closest Points to Origin

Ways To Form Max Heap

Kth Largest Element In An Array

Magician And Chocolates

Sliding Window Median

Binary Heap Quiz

HackerRank Test

Greedy

0/14

Largest Perimeter Triangle

Longest Palindrome

Maximum Sum with exactly K elements

Minimum Moves to convert string

Maximize Sum Of Array After K Negations

Assign Mice to Holes

Job Sequencing Problem

Kth Smallest Element In A Sorted Matrix

Minimum Number of Refueling Stops

Reducing Dishes

Greedy Algorithm Quiz

Dynamic Programming (Beginner)

0/13

Pascal’s Triangle

Best time to Buy and Sell Stock

Fibbonacci Number

Best Time to Buy and Sell Stock II

Climbing Stairs

Length of Longest Fibonacci Subsequence

Min Jumps Array

Coins in a Line

Longest Increasing Subsequence

Tiling A Rectangle With The Fewest Squares

Max Sum Without Adjacent Elements

Dynamic Programming Quiz

Dynamic Programming (Intermediate)

0/14

Pascal’s Triangle II

Is Subsequence?

Perfect Squares

Minimum cost for tickets

Min Sum Path in Matrix

Longest Palindromic Subsequence

Longest Common Subsequence

Longest Increasing Subsequence

Unique Paths In A Grid

Coin Sum Infinite

Coins In A Line

Regular Expression Matching

Dynamic Programming Concepts

Dynamic Programming (Advanced)

0/21

N-th Tribonacci Number

Get Maximum in Generated Array

Predict the Winner

Maximum length of Pair Chain

Longest String chain

Minimum Time to make Rope colorful

Regular Expression ii

Interleaving String

Palindrome Partitioning II

Longest Palindromic Substring

Unique Binary Search Trees ii

Matrix chain multiplication

Tushars Birthday Party

Distinct Subsequences

Evaluate Expression To True

Russian Doll Envelopes

Stock Trading Dynamic Programming Problems

Graph (Beginner)

0/14

Find if Path exists in Graph

Find Center of Star Graph

Island Perimeter

Rotting Oranges

Minimum Depth of Binary Tree

Capture Regions on Board

Frog Position After T Seconds

Smallest Multiple With 0 And 1

Number Of Islands

Shortest Path Visiting All Nodes

Graph Theory Concepts

Graph Types and Algorithms

Graph (Advanced)

0/12

Min Cost to Connect All points

Find All Possible recipes from Given Supplies

All Ancestos of a Node in a Directed Acyclic Graph

Number of Provinces

Possibility of finishing all courses given pre-requisites

Commutable Islands

Knight On Chess Board

Is Graph Bipartite?

Graph Algorithms

Trie

0/6

Longest Common Prefix

Shortest Unique Prefix

Maximum XOR of Two Numbers in an Array

Subarrays Xor Less Than B

Distinct Echo Substrings

Concatenated Words

Segment Tree

0/5

Falling Squares

Bob and Queries

Number of Longest Increasing Subsequence

Range Frequency Queries

Full Stack Web Development

Full-Stack Web Development ( Introduction to Web Development)

0/5

Internet Basics

Understanding Client-Server Architecture

Overview of Web Development

What happens when you visit a webpage

Setting up a Development Environment

HTML (HyperText Markup Language)

0/33

HTML Basics (What, why and how)

What are HTML Tags?

HTML Tags and Elements

Heading (h1, h2, h3, h4, h5, h6)

Attributes (name, id, class, style)

Ordered list and type (ol)

Unordered list (ul)

Displaying Images (img)

Displaying Videos (video)

Embedding another website or its portion into your page (iframe)

Creating Tables (table, thead, th, tr, td, tbody, tfooter)

Creating Forms (form)

Filling forms with inputs

Input type: text

Input type: number

Input type: checkbox

Input type: radio

Input type: file

Input type: button

Inline and Block elements (div VS span and more)

Semantic and non semantic tags (header, footer, etc / div, p, etc)

Importing/including content from other sources using link, script

Table exercise: Homework

Login Form: Homework

Design this HTML Page: Homework

CSS (Cascading Style Sheets) Basics

0/19

Different ways to write CSS: class

Different ways to write CSS: id

Different ways to write CSS: inline

Text and Font Styles

Box Model and Layout

CSS Combinators

Pseudo elements

Display property

Units: px vs em vs rem

Revive this dead HTML Page: Homework

CSS Advanced

0/15

Transformations

Transformations: translate

Transformations: scale

Transformations: rotate

Transformations: skew

Responsive Design with Media Queries

CSS Preprocessors

CSS Frameworks: Bootstrap

CSS Frameworks: Tailwind CSS

CSS Best Practices

Creating these transforms: Homework

Getting started with JavaScript (JS)

0/3

Introduction and history of JavaScript

Where to start from and experiment

Which IDEs to use for optimal productivity

Fundamentals of JavaScript

0/3

Basic JS syntax

Variables: let, const and var

Stepping up with JavaScript

0/15

Basic JS syntax and data types

Control flow (if statements, loops)

Functions: Legacy

Functions: arrow

Functions: function expression

Functions: IIFE

Arrays: common methods (length, slice, splice, concat, reverse)

Arrays: map, reduce and filter

Objects: Deep copy

Objects: Shallow copy

ES6 features (let/const vs var, arrow functions, promises, async/await)

Understanding and playing with DOM (Document Object Model)

0/2

Introduction to DOM

DOM manipulation (Dynamically changing the UI)

Event listeners in JS

0/6

Event handling (onclick)

Event handling (onsubmit)

Event handling (onmouseover)

addEventListener

Event capturing

Fetching data in JS

0/3

AJAX and Fetch API

Sending and receiving payload

Timing Events in JS

0/4

Invoke an alert box after 3 seconds: Homework

Create seconds counter with play and pause functionality: Homework

Advanced JavaScript

0/10

Callbacks and Promises

Higher Order Functions

Asynchronous JavaScript

Modules and import/export

Creating the TODO App: Homework

JS Project

0/2

Ticket Management Application

Frontend with React

0/34

Introduction to React

How react works?

JSX and Rendering Elements

Components and Props

State and Lifecycle Methods

React Hooks: useEffect

React Hooks: useState

React Hooks: useMemo

React Hooks: useCallback

React Hooks: useRef

Make custom hooks

Handling Events

Conditional Rendering

Lifting State Up

Composition vs Inheritance

ContextAPI vs Redux

ContextAPI for State Management

Redux for State Management

Connecting React with Express

Adding libraries to your React App!

Axios for API calls

Styled components

Recreating a TODO App: Homework

Add redux to the TODO app: Homework

Styling with React

0/5

Component scoped CSS

Styled components

Styled components: dynamic styling

Component Lifecycle in React

0/5

What is Component Lifecycle?

Introduction to Node.js

0/3

Introduction to Node.js and NPM (How nodejs works, why is it required)

Learn how to install libraries and use them

Create a server

Modules in Node.js

0/6

What are modules?

Filesystem and path modules

npm, nvm and nodemon

events in Node.js

Create your own module

Introduction to express.js

0/5

Understanding Express.js

Creating APIs with Express

0/10

Introduction to REST APIs

Routing with Express.js (Make your first route!)

Controllers in Express.js (Handle your first route request!)

Middleware in Express.js (Protect your routes, mutate/modify requests on go!)

Building a REST API with Express.js

Session and Cookies

Data Storage with MongoDB

0/11

Introduction to Databases

Introduction to MongoDB (What is MongoDB (NoSQL DB), what are document based databases?)

CREATE Operation

UPDATE Operation

DELETE Operation

AGGREGATE Operation

Integrating MongoDB with Node.js (connecting your database to your backend)

Introduction to Mongoose

Data Modeling and Validation with Mongoose

Stitching all together: Understanding MERN Stack

0/8

Overview of MERN Stack

Setting up the Development Environment (Using VSCode)

Managing the structure

Understanding the connection state

Sending payload

Handling payload

MERN project

0/2

Git and GitHub

0/4

Introduction to Version Control

Branching and Merging

Collaborating on GitHub

Deployment

0/2

Introduction to Deployment and Hosting

Deployment of MERN applications

Low Level System Design

Low Level Design (Basic Building Blocks)

0/5

Solid Principles

0/6

Single Responsibility Principle

Open closed Principle

Dependency Inversion Principle

Liskov’s substitution Principle

Interface Segregation Principle

SOLID Principles Quiz

Creational Design Patterns

0/5

Abstract Factory

Creational Design Quiz

Structural Design Patterns

0/5

Structural Design Quiz

Behavioural Design Patterns

0/5

Behavioural Design Quiz

LLD Topics

Pizza factory

0/7

Identification of actors

Use case diagram

⁠Activity Diagram

SQL Query builder

0/7

⁠Identification of actors

Use case diagram

⁠Activity Diagram

Logger

0/11

Introduction & Class Diagram

Singleton Logger

⁠Identification of actors

⁠Use case diagram

Activity Diagram

Car Price Calculator

0/12

Car Price Calculator LLD Chapter 1

Car Price Calculator LLD Chapter 2

Car Price Calculator LLD Chapter 3

Car Price Calculator LLD Chapter 4

Car Price Calculator LLD Chapter 5

Identification of actors

⁠Use case diagram

Activity Diagram

Weather Station

0/7

⁠Identification of actors

Use case diagram

Activity Diagram

Ticket management system

0/7

⁠Identification of actors

⁠Use case diagram

Activity Diagram

Payment processor

0/11

Payment Processor LLD Chapter 1

Payment Processor LLD Chapter 2

Payment Processor LLD Chapter 3

Payment Processor LLD Chapter 4

Identification of actors

Use case diagram

Activity Diagram

Elevator System

0/7

⁠Identification of actors

Use case diagram

⁠Class diagram

Activity Diagram

Car parking

0/20

Introduction Video

Use Case Diagram

Class Diagram continued

Parking Service

Discussion on Parking Spots and Parking Service

Activity Diagram

How to add Logging in the system

Coding Part 2 (Adding Logging in the system)

Implementing Parking pots using Decorator Design pattern

⁠Identification of actors

Use case diagram

⁠Activity Diagram

WhatsApp

0/7

⁠Identification of actors

⁠Use case diagram

Activity Diagram

Amazon

0/7

Identification of actors

Use case diagram

⁠Activity Diagram

PayPal

0/8

Introduction to Paypal

⁠Identification of actors

Use case diagram

Activity Diagram

Assignment

0/2

Design Patterns

Snakes and Ladders Game Implementation

High Level System Design

High Level Design ( Building Blocks )

0/11

Consistent Hashing

Redundancy and Replication

Data Partitioning

Long Polling and WebSockets

Fast-Track to Full Spectrum Software Engineering

Explanation of Key Steps:

User Login and Authentication
The process begins with the user logging in. If credentials are invalid, the system ends the process with an error.

Interface and Table Selection
After authentication, the SQL Query Builder interface appears. The user selects the relevant database tables.

Column Selection & Filter Application
The user picks specific columns and applies filters to narrow down the data results.

Joins and Conditions
If the query involves multiple tables, the user can define JOINs and additional conditions.

Query Preview & Execution
The system builds the query in real-time. The user can preview it and choose to edit or execute.

Execution and Result Display
Once the query runs successfully, the system displays the results. If it fails, an error is shown.

Optional Export
The user has the option to export the result set in different formats.

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