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Title
Difficulty
Videos
Companies
Same Tree
easy
amazon
apple
bloomberg
+4 more
Symmetric Binary Tree
easy
-
adobe
alibaba
amazon
+17 more
Binary Tree Level Order Traversal - Level by Level
medium
adobe
amazon
apple
+16 more
Binary Tree Traversal - Zigzag Level Order Traversal
medium
-
amazon
apple
bloomberg
+12 more
Maximum Depth of Binary Tree
easy
adobe
amazon
apple
+11 more
Word Ladder 2 - Get all the ladders
hard
-
amazon
apple
bloomberg
+11 more
Word Ladder 1 - Get Ladder Length
hard
-
affirm
amazon
apple
+23 more
Clone Undirected Graph
medium
amazon
apple
facebook
+9 more
Number of Islands
medium
adobe
affirm
alibaba
+55 more
Course Schedule 1 - Is it Possible
medium
amazon
apple
bloomberg
+19 more
Graph Valid Tree
medium
amazon
facebook
google
+5 more
Least Number of Perfect Squares that Sums to n
medium
-
adobe
amazon
apple
+11 more
Serialize and Deserialize Binary Tree
hard
amazon
apple
bloomberg
+18 more
Coin Change with Fewest Number of Coins Given Infinite Supply
medium
adobe
affirm
airbnb
+22 more
Number of Connected Components in an Undirected Graph
medium
-
amazon
facebook
google
+3 more
Nested List Weight Sum
medium
-
amazon
cloudera
facebook
+2 more
Nested List Weight Sum 2
medium
-
didi
facebook
linkedin
Serialize and Deserialize N-Ary Tree
hard
-
amazon
apple
ebay
+6 more
Serialize and Deserialize Binary Search Tree BST
medium
-
amazon
bytedance
ebay
+9 more
Find Largest Value in Each Tree Row
medium
amazon
apple
facebook
+2 more
Number of Provinces
medium
-
adobe
amazon
atlassian
+13 more
Print Binary Tree
medium
-
facebook
linkedin
microsoft
+2 more
Accounts Merge
medium
-
amazon
apple
bloomberg
+6 more
Is Graph Bipartite
medium
-
amazon
dropbox
ebay
+6 more
Vertical Order Traversal of a Binary Tree
hard
-
adobe
amazon
bloomberg
+7 more
Flower Planting With No Adjacent
medium
-
linkedin