PrepFlow
Jobs
ATS Checker
Companies
DSA Sheets
Compiler
PrepFlow
Sign in
Login Required!
You need to log in to access your saved progress.
Companies
Oracle
Depth First Search
Depth First Search
0/25 solved
Number of Islands
MEDIUM
Validate Binary Search Tree
MEDIUM
Binary Tree Maximum Path Sum
HARD
Lowest Common Ancestor of a Binary Tree
MEDIUM
Course Schedule
MEDIUM
Invert Binary Tree
EASY
Diameter of Binary Tree
EASY
Binary Tree Inorder Traversal
EASY
Binary Tree Right Side View
MEDIUM
Kth Smallest Element in a BST
MEDIUM
Lowest Common Ancestor of a Binary Search Tree
MEDIUM
Course Schedule II
MEDIUM
Serialize and Deserialize Binary Tree
HARD
Max Area of Island
MEDIUM
Path Sum
EASY
Populating Next Right Pointers in Each Node
MEDIUM
Path Sum II
MEDIUM
Recover Binary Search Tree
MEDIUM
Design Add and Search Words Data Structure
MEDIUM
Range Sum of BST
EASY
Flatten Nested List Iterator
MEDIUM
Number of Closed Islands
MEDIUM
Boundary of Binary Tree
MEDIUM
The Maze II
MEDIUM
Closest Binary Search Tree Value II
HARD