• Time Complexity analysis using Big O Notation
• Space Complexity analysis using Big O Notation
• Techniques to find time & space complexity
• Array overview & introduction
• Searching algorithms Introduction & Implementation
• Binary search algorithm, implementation with examples
• Searching max value in ordering array & rotational array using binary search
• Sorting Algorithms & Implementation
• Find Inversion array & median of two array using merge sort
• Shuffling array element by segregate 0’s,1’s & 2’s with moving 0’s to end

Assignments & Assignments Discussion

• Assignments based on binary search algorithms
• Assignments based on Array basic computation

• Linear time approach to find next smallest palindrome & next greater number in array
• Minimum Window Substring & two pointers techniques
• Distinct window substring & remove duplicates from order, un-ordered strings
• Quick sort approach for maximum Sum Subarray, Kth smallest element in an array
• Xor techniques to find one & two unique element in an array
• Trapping Rain Water, Rearrange array for max( arr[i] - arr[j])
• Design array data structures with O(1) operations

Assignments & Assignments Discussion

• Assignments based on sorting algorithms
• Assignments based on merge sort efficient algorithms techniques
• Assignments based on Array medium level difficultly problems

• Techniques to solve matrix related problems(2-D array)
• Spiral order traversal, Diagonal Order Matrix, 90 degree matrix rotation etc
• Array Puzzle problem(Celebrity problem, stock buy sell, distributed candy etc)
• Compute Sqrt(x) using binary search
• Array computation to check rectangle Overlap & jump game problem
• Counting sort approach & problems
• Search efficiently in 2-D array
• Problem based on geometrical computational array

Assignments & Assignments Discussion

• Assignments based on 2-D array(matrix) advanced Problems
• Assignments based on Puzzles based on array
• Assignments based on geometrical array computations

• Foundations, Binary tree concepts & creation
• Making a tree node class, Explanation & Implementation of Binary Tree & BST
• Binary Tree traversal (InOrder, Pre and Post Order using recursion)
• Understanding time & space complexity in Binary Tree
• Basic computation of Lowest Common Ancestor, leave node, cousin node etc
• PreOrder, InOrder traversal without recursion
• Conversion BT to BST, BT to Doubly LinkedList
• Deletion in Binary Search Tree( one node, two node , leaf node etc)

Assignments & Assignments Discussion

• Assignments based on basic binary tree traversal algorithms
• Assignments based on conversion binary tree to other data structures
• Assignments based on node computation logic

• Techniques to solve distance problem in Binary tree
• K distance from root, all nodes k distance, k distance from leaf etc
• Minimum distance node, right node at distance etc.
• Traverse Binary tree left view, right view, bottom view & Top View etc
• Traverse Binary Tree Level Order,Reverse Level Order, spiral order etc
• Techniques to solve BST based Problems
• kth largest element BST, height balanced BST, largest subtree in BST etc
• Boundary traversal, Diameter of a Binary Tree etc

Assignments & Assignments Discussion

• Assignments based on distance traversal logic in Binary Tree
• Assignments based on BST(Binary search tree)
• Assignments based on boundary traversal of Tree

• N-ary Tree Introduction & Implementation
• Mirror image problems of BT & N-ary Tree
• Problems based on path in Binary Tree
• Maximum sum of leaf to root path, Maximum Path Sum(any node), convert BT to sumTree etc
• Serialise and Deserialise BT, Find largest Subtree etc
• Construct Binary tree from PostOrder & InOrder sequences

Assignments & Assignments Discussion

• Assignments based on Sumtree & path traversal logic in tree
• Assignments based on subtree computations & Mirror image
• Advanced level problems assignments

• Linked List Introduction & Implementation
• Linked List Operations: Traverse, Insert and Delete
• Doubly Linked List Introduction, Implementation & Operations
• LinkedList arrangement & Traversal Problems
• N’th node from the end, reverse a linked list, intersection point of Liked Lists etc
• Palindrome linked list

Assignments & Assignments Discussion

• Assignments based on LinkedList basic traversal
• Assignments based on DoublyLinkedList basic traversal
• Specific node computation in LinkedList

• Clone a Linked List
• Merge two Sorted Linked List
• Linked List addition
• Segregate Linked List into Even and Odd

Segregate Linked List into Even and Odd

• Assignments based on Merge operation of LinkedList
• Geometrical computation in LinkedList
• Problems based on medium difficulties

• Implement merge sort in linked list
• Flatten a multilevel doubly linked list
• Design & Implement Least recently used (LRU)
• Reverse LinkedList nodes in k-group
• Rearrange a given linked list in-place

Assignments & Assignments Discussion

• Assignments based on in-place k nodes reverse logic
• Advanced problems of multilevel Doubly LinkedList
• Problems based on arrangement of LinkedList

• Stack: What is stack & how are stacks data structures used?
• Application & Implementation of stack
• Queue: What is Queue & how are Queue data structures used?
• Application & Implementation of Queue
• Introduction & Implementation of Circular Queue
• Use stack to find next greater element in array
• Valid parenthesis

Assignments & Assignments Discussion

• Assignments based on basic stack LIFO operation
• Assignments based on basic queue FIFO operation

• Design Stack that Supports findMinimum() in O(1)
• Sliding Window Problem using queue Data Structure efficiently
• Use stack to solve application of Histogram problem
• Use stack to solve efficiently reverse word in string
• Find Maximum size rectangle in binary matrix

Assignments & Assignments Discussion

• Practise assignments of Advanced level difficulty in stack

• Recursion is base of Algorithms, how to use it ?
• Recursion examples with implementation
• How to apply backtracking using recursion

Assignments & Assignments Discussion

• Practise assignments of Basic level difficulty in Backtracking

• Implement pow(x, n)
• Find PowerSet Using Recursion
• N Queen Problem
• Print all Permutations of a given String
• Combinational Sum

Assignments & Assignments Discussion

• Practise assignments of Medium level difficulty in Backtracking

• Generate Combination of Parenthesis
• Rat Maze Problem
• Knight Walk Problem
• Sudoku Solving Problem
• Mobile Keypad Problem

Assignments & Assignments Discussion

• Practise assignments of Advanced level difficulty in Backtracking

• Graph Introduction & implementation
• Adjacency list implementation & traverse in graph
• Directed & Undirected graph introduction & implementation
• Depth First Search(DFS) introduction, implementation & Traversal
• Breadth First Search(BFS) introduction, implementation & Traversal
• Check graph connectivity using DFS
• Finding path in Directed Graph using BFS/DFS
• Find path in Matrix using DFS approach

Assignments & Assignments Discussion

• Practise assignments of Advanced level difficulty in graph
• Practise assignments of graph

• Topological sorting concepts and implementation
• Package Dependency problem, Alien Dictionary Problem using Topological etc
• Find Largest Region Graph, Number of IsLand in matrix etc using BFS graph
• Find cycle in Directed/Undirected Graph using DFS
• Rotten Orange Problem, Wall Gate Algorithm etc using BFS

Assignments & Assignments Discussion

• Practise assignments of Advanced level difficulty in graph
• Practise assignments of graph

• Trie data Structure Introduction, Concepts & Implementation
• Trie data structure approach to find word in matrix
• Trie data structure approach to implement Autocomplete suggestion problem
• Longest Common Prefix string using Trie
• Dijkstra Algorithm explanation with example
• Snake ladder problem, Phone , Phone Dictionary Problem etc
• Jumping Number problem, check graph is tree etc

Assignments & Assignments Discussion

• Practise assignments of Advanced level difficulty in graph
• Practise assignments of graph

• What is heap , Min Heap & Max Heap introduction, Approach
• Implementation of Min Heap & Max Heap
• Basic heap operation , Heapify operation implementation
• How hashing Works, Read/Write Operation O(1)
• Design and implement LRU
• Problems based on anagrams, group anagrams etc using hashing

Assignments & Assignments Discussion

• Practise assignments of Advanced level difficulty in hashing
• Practise assignments of heap

• Problems Based on running streams of strings using Hashing
• First non-repeating character from stream using hashing
• Find Median of running data streams problem using Heap
• Four sum problem, convert number to words etc
• Merge k sorted arrays, Relative Sorting, Minimum window string etc

Assignments & Assignments Discussion

• Practise assignments of Advanced level difficulty in hashing
• Practise assignments of heap

• What is Dynamic Programming
• How to identify a dynamic Programming problems
• How Dynamic programming is better without recursion
• Longest Increasing subsequence(LIS) Algorithms
• Longest Common Subsequences(LCS), Longest Palindrome
• Subsequences(LPS),common substing etc using LIS algorithms

Assignments & Assignments Discussion

• Practise assignments of Advanced level difficulty in DP
• Practise assignments of DP

• Fibonacci series DP concepts
• Solve nth strair problem,Count Path in a Matrix etc using DP Fibonacci
• String based DP problems
• String Edit Distance Algorithm,Interleaving Strings, string Partition Palindrome etc
• Delete Minimum Character to Make Palindrome
• Un-bound Knapsack Problem, KnapSack Problems optimised

Assignments & Assignments Discussion

• Practise assignments of Advanced level difficulty in DP
• Practise assignments of DP

• DP problems based on summation concepts
• Subset Sum Problem, find Count of Subset Sum,Maximum sum sub sequence
• Maximum Sum of Non adjacent Elements,Subset Partition etc
• Dynamic Programming puzzled based Problems
• Egg Dropping Puzzle, Wildcard Pattern Matching, Coin Change Problem etc
• Keystroke Problem,Rod Cutting Algorithm, word break, Weight Job Scheduled etc

Assignments & Assignments Discussion

• Practise assignments of Advanced level difficulty in DP
• Practise assignments of DP

• System design Internals & its components
• Sharding techniques
• Relational Database, SQL-NoSQL , Key Value Store & Document Store (MongoDB)
• Backend System techniques for distributed system and CAP theorem
• Http Polling, Long Polling , WebSockets, Server Side Events
• Design essentials : Latency, Throughput , Load Balancer
• Basic System Design problem
• Design Tiny URL, Design Pastebin Service
• Design Generic Deck of Cards, Design Backjack Card Games
• Design Airline Reservation System, Design File system
• Design Online Bus booking system(Red Bus), Design Railway Reservation System
• Design Streaming Music System, Design Hit Counter, Design parking Lot etc
• Design Online Hotel Booking System, Design CDN system etc
• Design Event Driven Architecture, Google Docs etc

Assignments & Assignments Discussion

• Practise assignments of Advanced level difficulty in Design
• Practise assignments of Design

• Design Facebook NewsFeed
• Design youtube/Netflix
• Design Uber system , Design Search Engine ( Like Google)
• Design BookMyShow , Design Recommend System
• Design WhatsApp Chat Service
• Design Drop Box/Google Drive, Design Distributed Cache System
• Design Garbage Collector System
• Design Customs HashMap Implementation Internals

Assignments & Assignments Discussion

• Practise assignments of Advanced level difficulty in Design
• Practise assignments of Design

• Design Twitter like social networking service & its tweet search features
• Search Functionality of Twitter Platform
• Design Zoom Car System
• Design Instagram
• Design Notification System
• Design a two Player Online Chess Game
• Design Online Shopping System Like Amazon, Flipkart
• Design Amazon Best seller Rank System
• Design Stock Exchange System( Zerodha, Upstox )
• Design Cricinfo
• Design Online Food Ordering System( Swiggy , Zomato)
• Object Oriented design of Food Ordering System(Swiggy , Zomato)
• Design Gmail
• Design API Rate Late Limiter
• Design Google Map
• Design online Discussion forum (like stackoverflow,quora)

Assignments & Assignments Discussion

• Practise assignments of Advanced level difficulty in Design
• Practise assignments of Design

• Understanding the classes and object and how to create it
• Solid Principles of OOPS
• Single-responsibility principle ,Open-closed principle, Dependency Inversion Principle etc
• How to apply design pattern for modular scalable code

• Introduction of design patterns
• Creational & structural design pattern
• How to use Singleton Design Pattern, Builder Design Pattern etc
• How to use Factory Design Pattern, Abstract Factory Design Pattern techniques
• How to use Observer design pattern, Strategy Design Pattern, Decorator Design Pattern etc

• What is threads, how to create threads
• How to create multiple threads
• How to achieve syntonisation using multithreading
• What is deadlock, how to avoid deadlock

• Implementation of Creating Deadlock
• Implementation of removing deadlock in Multithreaded Environment
• Implementation of creating 3 threads and how perform synchrozation
• Print sequence of Natural numbers using Three Threads
• Implementation of Multi Reader and Writer Problem using Multithreading

• How to choose best architecture for System Design interview problems
• Why micro service architectures is better than monolithic architecture
• How to design micro-service Architectures, fault tolerance scalable system
• Asynchronous communication, Active MQ internals with implementation
• How to Handle Cascading failure in System Design Problems, Implementation

• System Design Essentials(Service Discovery, Load Balancer, Distributed Tracing and Monitoring) etc
• Scalable asynchrnous communication using Kafka System Internals
• Concurrency and System failure issues in DB transaction in System Design
• Distributed Transaction of backend in Distributed System
• What is Docker, what is Cotainer, jenkins, cloud infrastructures
• Complete steps of Building and Deploying App in Docker Container Cloud Platform

• How to showcase soft skills(Teamwork,Leadership skills, Adaptability, DecisionMaking etc) in interview
• Amazon 14 Leadership Principal with examples
• How you will resolve conflict with team members in project
• How you handle situation, when you failed to deliver the project within project estimation timeline
• Biggest Technical mistake you have done in your project
• Situation when you had solved a very difficult problem in project
• Why your CGPA is not high, When you have taken initiative in a project
• Time when you have failed to meet customer deadline in project
• What is your greatest achievement in a project
• Time when you successfully meet the tight deadline of a project
• Tell me the time when you regret your decision in a project deliverables