Data Structures & Algorithms Interview Prep

This is the scope of the project, I happily invite you to contribute!

Basics (Updated daily)

• Big O Notation
• Memory
• Strings
• Arrays
• Hash Tables
• Linked Lists
  • Singly Linked List
  • Doubly Linked List
  • Circular Linked List
• Stacks
• Queues
• Trees
  • Binary Tree
  • Binary Search Tree
• Graphs
• Tries
• Recursion
• Sorting
  • Bubble sort
  • Quick Sort
  • Merge Sort
  • Insertion sort
  • Selection sort
  • Heapsort
  • Counting sort
  • Radix sort
• Searching
  • Breath First Search
  • Depth First Search
• Dynamic Programming
• Greedy

Data-structures - Coming soon...

Hash Map & Arrays

Frequency	Problem	Stated	Solution	Solution	Explained
High	Two Sum		Javascript	Python	Two Sum Explained
High	Valid Anagram		Javascript
Medium	Jewels and Stones		Javascript
High	Contains duplicates		Javascript
High	Group Anagrams		Inprogress...
High	Encode and Decode Strings		Inprogress...
High	Valid Sudoku		Inprogress...
High	Longest Consecutive Sequence		Inprogress...
High	Top K Frequent Elements		Inprogress...

Binary Search

Frequency	Problem	Stated	Solution
High	Binary Search		Javascript
Low	Two Sum II - Input Array Is Sorted		Javascript

Linked List

Stacks & Queues

Frequency	Problem	Stated	Solution
High	Implement Queue using Stacks		Inprogress...
High	Valid Parentheses		Inprogress...
High	Design Circular Queue		Inprogress...
High	Design Hit Counter		Inprogress...
High	Trapping Rain Water		Inprogress...

Trees

Frequency	Problem	Stated	Solution
Low	test		In progress...

Graphs

Frequency	Problem	Stated	Solution
Low	test		In progress...

Trie

Frequency	Problem	Stated	Solution
Low	test		In progress...

Heap

Frequency	Problem	Stated	Solution
Low	test		In progress...

Algorithms

An Algorithm is a set of intructions on how to solve particular problems

Prefix Sum

Frequency	Problem	Stated	Solution
High	Running Sum of 1d Array		Javascript
High	Find Pivot Index		Javascript

Sliding Window

Frequency	Problem	Stated	Solution
Low	Longest Substring Without Repeating Characters		Javascript

Running Pointers

Frequency	Problem	Stated	Solution
Low	Backspace String compare		Javascript

Suffix Arrays

Frequency	Problem	Stated	Solution
Low	test		Javascript

Breath First Search

Frequency	Problem	Stated	Solution
Low	test		In progress

Depth First Search

Frequency	Problem	Stated	Solution
Low	test		In progress...

Divide && Conquer

Frequency	Problem	Stated	Solution
Low	test		In progress...

Recursion

Frequency	Problem	Stated	Solution
Low	test		In progress

Dynamic Programming

Frequency	Problem	Stated	Solution
Low	test		In Progress...

Math

Frequency	Problem	Stated	Solution
Low	test		In Progress...

Greedy

Frequency	Problem	Stated	Solution
Low	Container With Most Water		Javascript

Matrix

Frequency	Problem	Stated	Solution
Low	test		In progress...

Geometry

Frequency	Problem	Stated	Solution
Low	test		In progress...

How to use this repo

npm install or yarn install
npm test

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