DSA QUESTION

Array & Matrix

#	Problem	Difficulty	Resources	Done	Notes	Revisit
1	Two Sum	Beginner	↗ Problem▶ Video		📝	☆

Math & Number Theory

#	Problem	Difficulty	Resources	Done	Notes	Revisit
1	Count Primes	Intermediate	↗ Problem▶ Video		📝	☆

Sorting

#	Problem	Difficulty	Resources	Done	Notes	Revisit
1	Sort an Array	Intermediate	↗ Problem▶ Video		📝	☆

Bit Manipulation

#	Problem	Difficulty	Resources	Done	Notes	Revisit
1	Single Number	Beginner	↗ Problem▶ Video		📝	☆

String

#	Problem	Difficulty	Resources	Done	Notes	Revisit
1	Valid Anagram	Beginner	↗ Problem▶ Video		📝	☆

Greedy

#	Problem	Difficulty	Resources	Done	Notes	Revisit
1	Jump Game	Intermediate	↗ Problem▶ Video		📝	☆

Two Pointers, Sliding Window, Prefix Sum

#	Problem	Difficulty	Resources	Done	Notes	Revisit
1	Longest Substring Without Repeating Characters	Intermediate	↗ Problem▶ Video		📝	☆

Recursion and Backtracking

#	Problem	Difficulty	Resources	Done	Notes	Revisit
1	Subsets	Intermediate	↗ Problem▶ Video		📝	☆

Binary Search & Divide and Conquer

#	Problem	Difficulty	Resources	Done	Notes	Revisit
1	Binary Search	Beginner	↗ Problem▶ Video		📝	☆

Linked List

#	Problem	Difficulty	Resources	Done	Notes	Revisit
1	Reverse Linked List	Beginner	↗ Problem▶ Video		📝	☆

Stacks and Queues

#	Problem	Difficulty	Resources	Done	Notes	Revisit
1	Valid Parentheses	Beginner	↗ Problem▶ Video		📝	☆

Hashing

#	Problem	Difficulty	Resources	Done	Notes	Revisit
1	Group Anagrams	Intermediate	↗ Problem▶ Video		📝	☆

Heaps

#	Problem	Difficulty	Resources	Done	Notes	Revisit
1	Kth Largest Element in an Array	Intermediate	↗ Problem▶ Video		📝	☆

Tree

#	Problem	Difficulty	Resources	Done	Notes	Revisit
1	Maximum Depth of Binary Tree	Beginner	↗ Problem▶ Video		📝	☆

Dynamic Programming

#	Problem	Difficulty	Resources	Done	Notes	Revisit
1	Climbing Stairs	Beginner	↗ Problem▶ Video		📝	☆

Graph

#	Problem	Difficulty	Resources	Done	Notes	Revisit
1	Number of Islands	Intermediate	↗ Problem▶ Video		📝	☆