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

35

Moderate

30 mins

398

Binary Tree Pruning

17

Moderate

20 mins

256

Tree Symmetricity

6

Easy

20 mins

417

Delete Leaf Nodes With Value X

9

Moderate

27 mins

210

Minimum Depth Of Binary Tree

4

Moderate

20 mins

175

Maximum Width In Binary Tree

7

Moderate

38 mins

298

Reverse Level Order Traversal

17

Moderate

30 mins

330

Right View

6

Moderate

35 mins

292

Boundary Traversal

37

Hard

20 mins

772

Level Order Traversal

14

Easy

15 mins

524

Identical Trees

3

Moderate

20 mins

302

Validate BST

6

Moderate

25 mins

737

Convert Bst To The Greater Sum Tree

5

Moderate

30 mins

307

Distance between two nodes of a Tree

9

Moderate

25 mins

209

Print Nodes at Distance K From a Given Node

3

Hard

20 mins

146

Convert binary tree to mirror tree

9

Easy

15 mins

271

Maximum Level Sum

1

Easy

15 mins

119

Cousins of Given Node in Binary Tree

3

Moderate

10 mins

68

Subtree of Another Tree

7

Easy

10 mins

276

Largest BST subtree

10

Easy

10 mins

302

Preorder traversal of a BST

2

Moderate

15 mins

77

Serialize/Deserialize The Binary Tree

7

Hard

15 mins

138

Delete Node In BST

2

Moderate

10 mins

85

Kth smallest node in BST

3

Moderate

15 mins

173

Closest element in BST

3

Easy

15 mins

85

Unival Trees NEW

Moderate

35 upvotes

Binary Tree Pruning NEW

Moderate

17 upvotes

Tree Symmetricity NEW

Easy

6 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

7 upvotes

Reverse Level Order Traversal NEW

Moderate

17 upvotes

Right View NEW

Moderate

6 upvotes

Boundary Traversal NEW

Hard

37 upvotes

Level Order Traversal NEW

Easy

14 upvotes

Identical Trees NEW

Moderate

3 upvotes

Validate BST NEW

Moderate

6 upvotes

Convert Bst To The Greater Sum Tree NEW

Moderate

5 upvotes

Distance between two nodes of a Tree NEW

Moderate

9 upvotes

Print Nodes at Distance K From a Given Node NEW

Hard

3 upvotes

Convert binary tree to mirror tree NEW

Easy

9 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

10 upvotes

Preorder traversal of a BST NEW

Moderate

2 upvotes

Serialize/Deserialize The Binary Tree NEW

Hard

7 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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