airajena/MY-DSA-PROGRAMS

MY DSA PROGRAMS

Roadmap

• [Complete Git & GitHub Course]
• Introduction to Programming
  • Types of languages
  • Memory management
• Flow of the program
  • Flowcharts
  • Pseudocode
• Introduction to Java
  • Introduction
  • How it works
  • Setup Installation
  • Input and Output in Java
  • Conditionals & Loops in Java
    • if-else
    • loops
    • Switch statements
  • Data-types
  • Coding best practices
• Functions
  • Introduction
  • Scoping in Java
  • Shadowing
  • Variable Length Arguments
  • Overloading
• Arrays
  • Introduction
  • Memory management
  • Input and Output
  • ArrayList Introduction
  • Searching
    • Linear Search
    • Binary Search
    • Modified Binary Search
    • Binary Search on 2D Arrays
  • Sorting
    • Insertion Sort
    • Selection Sort
    • Bubble Sort
    • Cyclic Sort
• Pattern questions
• Strings
  • Introduction
  • How Strings work
  • Comparison of methods
  • Operations in Strings
  • StringBuilder in java
• Maths for DSA
  • Introduction
  • Complete Bitwise Operators
  • Range of numbers
  • Prime numbers
  • Sieve of Eratosthenes
  • Newton's Square Root Method
  • Factors
  • Modulo properties
  • Number Theory
  • HCF / LCM
  • Euclidean algorithm
• Recursion
  • Introduction
  • Flow of recursive programs - stacks
  • Why recursion?
  • Tree building of function calls
  • Tail recursion
  • Sorting
    • Merge Sort
    • Quick Sort
  • Backtracking
    • N-Queens
    • N-Knights
    • Sudoku Solver
    • [Maze problems]
  • [Recursion String Problems]
  • [Recursion Google, Amazon Questions]
  • [Recursion Array Problems]
  • [Recursion Pattern Problems]
  • [Subset Questions]
• [Space and Time Complexity Analysis]
  • [Introduction]
  • [Comparisons of various cases]
  • [Solving Linear Recurrence Relations]
  • [Solving Divide and Conquer Recurrence Relations]
  • [Big-O, Big-Omega, Big-Theta Notations]
  • [Little Notations]
  • [Get equation of any relation easily - best and easiest approach]
  • [Complexity discussion of all the problems we do]
  • [Space Complexity]
  • [NP-Completeness Introduction]
• [Object Oriented Programming]
  • [Introduction]
  • [Classes & its instances]
  • [this keyword in Java]
  • [Properties]
    • [Inheritance]
    • [Abstraction]
    • [Polymorphism]
    • [Encapsulation]
  • [Overloading & Overriding]
  • [Static & Non-Static]
  • [Packages]
  • [Access Control]
  • [Interfaces]
  • [Abstract Classes]
  • [Annotations]
  • [Singleton Class]
  • [final, finalize, finally]
  • [Object Cloning]
  • [Object Class]
  • [Generics]
  • [Exception Handling]
  • [Collections Framework]
  • [Vector Class]
  • [Lambda Expression]
  • [Enums]
• Linked List
  • [Introduction]
  • [Singly + Doubly + Circular LinkedList]
  • [Fast and slow pointer]
  • [Cycle Detection]
  • [Reversal of LinkedList]
  • [Linked List + Recursion]
• Stacks & Queues
  • Introduction
  • Interview problems
  • Push efficient
  • Pop efficient
  • Queue using Stack and Vice versa
  • Circular Queue
• Trees
  • Introduction
  • Binary Trees
  • Binary Search Trees
  • DFS
  • BFS
  • AVL Trees
  • Segment Tree
• Heaps
  • Introduction
  • Theory
  • Priority Queue
  • Heapsort
  • Two Heaps Method
  • k-way merge
  • Top k elements
  • Interval problems
• HashMap
  • Introduction
  • Theory - how it works
  • Comparisons of various forms
  • Limitations and how to solve
  • Map using LinkedList
  • Map using Hash
  • Count Sort
  • Radix Sort
  • Chaining
  • Probing
  • Huffman-Encoder
• Subarray Questions: Sliding window, Two Pointer, Kadane's Algorithm
• Graphs
  • Introduction
  • BFS
  • DFS
  • Working with graph components
  • Minimum Spanning Trees
  • Kruskal Algorithm
  • Prims Algorithm
  • Dijkstra’s shortest path algorithm
  • Topological Sort
  • Bellman ford
  • A* pathfinding Algorithm
• Dynamic Programming
  • Introduction
  • Recursion + Recursion DP + Iteration + Iteration Space Optimized
  • Complexity Analysis
  • 0/1 Knapsack
  • Subset Questions
  • Unbounded Knapsack
  • Subsequence questions
  • String DP
• Greedy Algorithms
• Tries

Advanced concepts apart from interviews

• Fast IO
• File handling
• Bitwise + DP
• Extended Euclidean algorithm
• Modulo Multiplicative Inverse
• Linear Diophantine Equations
• Matrix Exponentiation
• Mathematical Expectation
• Catalan Numbers
• Fermat’s Theorem
• Wilson's Theorem
• Euler's Theorem
• Lucas Theorem
• Chinese Remainder Theorem
• Euler Totient
• NP-Completeness
• Multithreading
• Fenwick Tree / Binary Indexed Tree
• Square Root Decomposition