| Nodes at Distance k from root in Binary Tree |
|
|
|
| Non-overlapping Intervals |
Medium
|
amazon
apple
bloomberg
facebook
google
microsoft
stripe
|
|
| 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
|
|
|
| Operations on Tree |
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 |
|
|
|
| Print or return all the full nodes in a binary tree |
Easy
|
|
|
| Print or return ancestors of a given node in binary tree |
|
|
|
| Print or return nodes between two given levels in a binary tree |
|
|
|
| Pseudo-Palindromic Paths in a Binary Tree |
Medium
|
amazon
|
|
| Range Sum Query - Immutable |
Easy
|
amazon
bloomberg
facebook
goldman-sachs
google
microsoft
palantir-technologies
|
|
| Replace each node in BST with subtree sum and its value |
Medium
|
|
|
| Return or print all leaf nodes of a binary tree |
Easy
|
|
|
| Right side view of a tree |
Medium
|
|
|
| Rotting Oranges |
Medium
|
|
|
| Search an element in a binary tree |
Easy
|
|
|
| Shortest path in Binary Search Tree that adds up to a given value |
Medium
|
|
|
| Sum of k smallest elements in BST |
|
|
|
| Sum of Two Integers |
Medium
|
amazon
apple
facebook
google
hulu
|
|
| Sum of two numbers using only bitwise operators |
|
|
|
| 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 |
|
|
|
| Verify Preorder Serialization of a Binary Tree |
Medium
|
google
|
|
| Adding Spaces to a String |
Medium
|
|
|
| Alice and Bob Playing Flower Game |
Medium
|
|
|
| Check If a String Is a Valid Sequence from Root to Leaves Path in a Binary Tree |
Medium
|
amazon
|
|
| Closest Leaf in a Binary Tree |
Medium
|
amazon
databricks
facebook
google
|
|
| Construct Smallest Number From DI String |
Medium
|
|
|
| Count Good Numbers |
Medium
|
|
|
| Count of Substrings Containing Every Vowel and K Consonants 1 |
Medium
|
|
|
| Count the Number of Powerful Integers |
Hard
|
|
|
| Debounce |
Medium
|
facebook
|
|
| Design an Ordered Stream Problem |
Easy
|
|
|
| Find Building Where Alice and Bob Can Meet |
Hard
|
|
|
| House Robber 4 |
Medium
|
|
|
| Minimum Index of a Valid Split |
Medium
|
|
|
| Minimum Operations to Exceed Threshold Value 1 |
Easy
|
|
|
| Minimum Time to Visit a Cell In a Grid |
Hard
|
|
|
| Valid Palindrome 3 - Is string palindrome after deleting at most k chars |
Hard
|
facebook
google
|
|
| Check If a Word Occurs As a Prefix of Any Word in a Sentence Problem |
Easy
|
yelp
|
|
| Construct the Lexicographically Largest Valid Sequence |
Medium
|
|
|
| Count of Substrings Containing Every Vowel and K Consonants 2 |
Medium
|
|
|
| Count Symmetric Integers |
Easy
|
|
|
| Course Schedule 4 |
Medium
|
uber
|
|
| Find Elements in a Contaminated Binary Tree |
Medium
|
google
|
|
| Interval List Intersections |
Medium
|
amazon
apple
bloomberg
cruise-automation
doordash
facebook
google
oracle
pinterest
snapchat
uber
|
|