DSA Problems
13 problems · master the patterns that show up in every interview.
Daily set · 3 curated problems
0
day streak
0%
0
/ 169
problems solved
Easy
0/55
Medium
0/104
Hard
0/10
0
day streak
best: 0 days
Arrays
0/14
Strings
0/12
Two Pointers
0/11
Sliding Window
0/11
Binary Search
0/11
Stacks & Queues
0/11
Linked Lists
0/12
Trees
0/13
Tries
0/6
Heaps & Priority Queues
0/10
Backtracking
0/9
Graphs
0/13
Greedy
0/10
Dynamic Programming
0/16
Bit Manipulation
0/10
Topic
Problem
Difficulty
Trees
Invert Binary Tree
Trees
Easy
Easy
Trees
Maximum Depth of Binary Tree
Trees
Easy
Easy
Trees
Same Tree
Trees
Easy
Easy
Trees
Symmetric Tree
Trees
Easy
Easy
Trees
Diameter of Binary Tree
Trees
Easy
Easy
Trees
Path Sum
Trees
Easy
Easy
Trees
Binary Tree Level Order Traversal
Trees
Medium
Medium
Trees
Validate Binary Search Tree
Trees
Medium
Medium
Trees
Lowest Common Ancestor of a BST
Trees
Medium
Medium
Trees
Binary Tree Right Side View
Trees
Medium
Medium
Trees
Kth Smallest Element in a BST
Trees
Medium
Medium
Trees
Binary Tree Maximum Path Sum
Trees
Hard
Hard
Trees
Subtree of Another Tree
Trees
Easy
Easy