Explore Topics

Arrays

Problems related to arrays (TwoSum, MaximumSubarray, ...)

Sorting

Problems related to sorting (Bubble sort, Merge Sort, ...)

Linked Lists

Single, double, circular linked list problems

Stacks & Queues

Stack and Queue related problems

Strings

String manipulation problems

Recursion

Recursive solutions and backtracking (Factorial, NQueens, ...)

Backtracking

Backtracking solutions (Combination Sum, Sudoku Solver, ...)

Binary Search

Binary search and its variations

Heaps

Heap / PriorityQueue problems

Binary Trees

Binary tree problems (InorderTraversal, ...)

Binary Search Trees

BST-specific problems (ValidateBST, ...)

Graphs

Graph algorithms (DFS, BFS, Dijkstra, ...)

Dynamic Programming

DP problems (1D, 2D, memoization, tabulation)

Tries

Trie / Prefix tree problems

Maths

Mathematical problems and concepts

Divide and Conquer

Problems related to Divide and Conquer (Kth Kthlargestelement, Median of 2 sorted lists, ...)