Check out the top trees and graphs data structure interview questions asked in interviews of top tech companies like Amazon, only on CodeStudio. Start Practicing now!

Problem Title

Difficulty

Avg Time to solve

Attempted

Count Univalue Subtrees

46

Moderate

30 mins

1037

Binary Tree Pruning

20

Moderate

20 mins

426

Symmetric Tree

19

Easy

20 mins

2132

Delete Leaf Nodes With Value X

12

Moderate

27 mins

396

Minimum Depth Of Binary Tree

8

Moderate

20 mins

405

Maximum Width In Binary Tree

11

Moderate

38 mins

1284

Reverse Level Order Traversal

27

Moderate

30 mins

1723

Right View

12

Moderate

35 mins

1227

Boundary Traversal of Binary Tree

83

Hard

20 mins

4276

Level Order Traversal

30

Easy

15 mins

2076

Check Identical Trees

13

Moderate

20 mins

1292

Partial BST

20

Moderate

25 mins

3216

Convert Bst To The Greater Sum Tree

6

Moderate

30 mins

669

Distance between two nodes of a Tree

12

Moderate

25 mins

795

Print Nodes at Distance K From a Given Node

5

Hard

20 mins

480

Convert binary tree to mirror tree

15

Easy

15 mins

855

Maximum Level Sum

2

Easy

15 mins

275

Cousins of Given Node in Binary Tree

4

Moderate

10 mins

118

Subtree of Another Tree

9

Easy

10 mins

1067

Size of Largest BST in Binary Tree

29

Easy

10 mins

1652

Preorder traversal of a BST

9

Moderate

15 mins

1280

Serialize and Deserialize Binary Tree

15

Hard

15 mins

468

Delete Node In BST

7

Moderate

10 mins

361

Kth smallest node in BST

9

Moderate

15 mins

993

Closest Binary Search Tree Value

8

Easy

15 mins

399

Count Univalue Subtrees NEW

Moderate

46 upvotes

Binary Tree Pruning NEW

Moderate

20 upvotes

Symmetric Tree NEW

Easy

19 upvotes

Delete Leaf Nodes With Value X NEW

Moderate

12 upvotes

Minimum Depth Of Binary Tree NEW

Moderate

8 upvotes

Maximum Width In Binary Tree NEW

Moderate

11 upvotes

Reverse Level Order Traversal NEW

Moderate

27 upvotes

Right View NEW

Moderate

12 upvotes

Boundary Traversal of Binary Tree NEW

Hard

83 upvotes

Level Order Traversal NEW

Easy

30 upvotes

Check Identical Trees NEW

Moderate

13 upvotes

Partial BST NEW

Moderate

20 upvotes

Convert Bst To The Greater Sum Tree NEW

Moderate

6 upvotes

Distance between two nodes of a Tree NEW

Moderate

12 upvotes

Print Nodes at Distance K From a Given Node NEW

Hard

5 upvotes

Convert binary tree to mirror tree NEW

Easy

15 upvotes

Maximum Level Sum NEW

Easy

2 upvotes

Cousins of Given Node in Binary Tree NEW

Moderate

4 upvotes

Subtree of Another Tree NEW

Easy

9 upvotes

Size of Largest BST in Binary Tree NEW

Easy

29 upvotes

Preorder traversal of a BST NEW

Moderate

9 upvotes

Serialize and Deserialize Binary Tree NEW

Hard

15 upvotes

Delete Node In BST NEW

Moderate

7 upvotes

Kth smallest node in BST NEW

Moderate

9 upvotes

Closest Binary Search Tree Value NEW

Easy

8 upvotes

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