Title Difficulty Companies Videos
Number of Connected Components in an Undirected Graph Medium amazon facebook google linkedin microsoft twitter
Number of elements smaller than root in preorder traversal of a BST Medium
Pacific Atlantic Water Flow Medium amazon apple bloomberg facebook google microsoft oracle
Palindromic Substrings Medium adobe amazon apple atlassian citadel coursera facebook goldman-sachs google linkedin mathworks microsoft pure-storage roblox twitter uber vmware
Plus One 2 - Given number as Linked List plus one Medium amazon google
Postorder Node Iterator of Binary Tree Medium
Power of Three Easy apple goldman-sachs google hulu
Print or return all leaf nodes of a binary tree Easy
Print or return all the full nodes in a binary tree Easy
Print or return ancestors of a given node in binary tree Medium
Print or return nodes between two given levels in a binary tree Medium
Pseudo-Palindromic Paths in a Binary Tree Medium amazon
Range Sum Query - Immutable Easy amazon bloomberg facebook goldman-sachs google microsoft palantir-technologies
Rectangle Area 2 Hard google sumologic
Replace each node in BST with subtree sum and its value Medium
Right side view of a tree Medium
Robot Bounded In Circle Medium airbnb goldman-sachs paypal qualtrics twitter
Rotting Oranges Medium
Shortest path in Binary Search Tree that adds up to a given value Medium
Strange Printer Hard netease
Sum of k smallest elements in BST Medium
Sum of Two Integers Medium amazon apple facebook google hulu
Sum of two numbers using only bitwise operators Medium
Task Scheduler Medium amazon apple bloomberg facebook google microsoft nutanix oracle pinterest uber vmware
Top K Frequent Elements Medium amazon apple bloomberg bytedance ebay facebook goldman-sachs google hulu linkedin microsoft oracle pocket-gems snapchat spotify uber vmware yahoo yelp
Total sum excluding adjacent of a given node in BST Medium
Verify Preorder Serialization of a Binary Tree Medium google
Accepted Candidates From the Interviews Medium
Active Businesses Medium yelp
Add Bold Tag in String Medium facebook google wish gusto
Add Two Integers Easy
Add Two Polynomials Represented as Linked Lists Medium
Adding Spaces to a String Medium
Alice and Bob Playing Flower Game Medium
All People Report to the Given Manager Medium amazon google
Allow One Function Call Easy
Apples & Oranges Medium facebook
Apply Bitwise Operations to Make Strings Equal Medium
Apply Discount Every n Orders Medium facebook
Apply Discount to Prices Medium
Apply Operations on Array to Maximize Sum of Squares Hard
Apply Operations to Make All Array Elements Equal to Zero Medium
Apply Operations to Make String Empty Medium
Arrange Table by Gender Medium
Array Prototype ForEach Easy
Array Wrapper Easy
Available Captures for Rook Easy square
Average Height of Buildings in Each Segment Medium
Average Selling Price Easy amazon
Average Time of Process per Machine Easy