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

Unival Trees

23

Moderate

30 mins

295

Binary Tree Pruning

14

Moderate

20 mins

222

Tree Symmetricity

4

Easy

20 mins

281

Delete Leaf Nodes With Value X

9

Moderate

27 mins

167

Minimum Depth Of Binary Tree

4

Moderate

20 mins

132

Maximum Width In Binary Tree

6

Moderate

38 mins

233

Reverse Level Order Traversal

14

Moderate

30 mins

262

Right View

4

Moderate

35 mins

210

Boundary Traversal

28

Hard

20 mins

409

Level Order Traversal

9

Easy

15 mins

302

Identical Trees

2

Moderate

20 mins

228

Validate BST

4

Moderate

25 mins

569

Convert Bst To The Greater Sum Tree

4

Moderate

30 mins

244

Distance between two nodes of a Tree

7

Moderate

25 mins

169

Print Nodes at Distance K From a Given Node

3

Hard

20 mins

103

Convert binary tree to mirror tree

8

Easy

15 mins

192

Maximum Level Sum

1

Easy

15 mins

96

Cousins of Given Node in Binary Tree

3

Moderate

10 mins

63

Subtree of Another Tree

7

Easy

10 mins

240

Largest BST subtree

8

Easy

10 mins

205

Preorder traversal of a BST

2

Moderate

15 mins

71

Serialize/Deserialize The Binary Tree

6

Hard

15 mins

102

Delete Node In BST

2

Moderate

10 mins

64

Kth smallest node in BST

3

Moderate

15 mins

121

Closest element in BST

3

Easy

15 mins

70

Unival Trees NEW

Moderate

23 upvotes

Binary Tree Pruning NEW

Moderate

14 upvotes

Tree Symmetricity NEW

Easy

4 upvotes

Delete Leaf Nodes With Value X NEW

Moderate

9 upvotes

Minimum Depth Of Binary Tree NEW

Moderate

4 upvotes

Maximum Width In Binary Tree NEW

Moderate

6 upvotes

Reverse Level Order Traversal NEW

Moderate

14 upvotes

Right View NEW

Moderate

4 upvotes

Boundary Traversal NEW

Hard

28 upvotes

Level Order Traversal NEW

Easy

9 upvotes

Identical Trees NEW

Moderate

2 upvotes

Validate BST NEW

Moderate

4 upvotes

Convert Bst To The Greater Sum Tree NEW

Moderate

4 upvotes

Distance between two nodes of a Tree NEW

Moderate

7 upvotes

Print Nodes at Distance K From a Given Node NEW

Hard

3 upvotes

Convert binary tree to mirror tree NEW

Easy

8 upvotes

Maximum Level Sum NEW

Easy

1 upvote

Cousins of Given Node in Binary Tree NEW

Moderate

3 upvotes

Subtree of Another Tree NEW

Easy

7 upvotes

Largest BST subtree NEW

Easy

8 upvotes

Preorder traversal of a BST NEW

Moderate

2 upvotes

Serialize/Deserialize The Binary Tree NEW

Hard

6 upvotes

Delete Node In BST NEW

Moderate

2 upvotes

Kth smallest node in BST NEW

Moderate

3 upvotes

Closest element in BST NEW

Easy

3 upvotes

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