Top Trees Interview Questions
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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
EXP
Difficulty
Avg Time to solve
Attempted
Count Univalue Subtrees
69
80
Moderate
30 mins
2.5k
Binary Tree Pruning
23
80
Moderate
20 mins
0.8k
Symmetric Tree
41
40
Easy
20 mins
4.9k
Delete Leaf Nodes With Value X
16
80
Moderate
27 mins
0.6k
Minimum Depth Of Binary Tree
11
80
Moderate
20 mins
0.8k
Maximum Width In Binary Tree
20
80
Moderate
38 mins
3k
Reverse Level Order Traversal
32
80
Moderate
30 mins
3k
Right View
30
80
Moderate
35 mins
2.6k
Boundary Traversal of Binary Tree
156
120
Hard
20 mins
10.4k
Level Order Traversal
47
40
Easy
15 mins
5.1k
Check Identical Trees
23
80
Moderate
20 mins
3.5k
Partial BST
48
80
Moderate
25 mins
9k
Convert Bst To The Greater Sum Tree
11
80
Moderate
30 mins
1k
Distance between two nodes of a Tree
17
80
Moderate
25 mins
1.2k
Print Nodes at Distance K From a Given Node
13
120
Hard
20 mins
0.9k
Convert binary tree to mirror tree
18
40
Easy
15 mins
1.8k
Maximum Level Sum
2
40
Easy
15 mins
0.4k
Cousins of Given Node in Binary Tree
8
80
Moderate
10 mins
0.2k
Subtree of Another Tree
31
40
Easy
10 mins
1.6k
Size of Largest BST in Binary Tree
63
40
Easy
10 mins
5k
Preorder traversal of a BST
23
80
Moderate
15 mins
4.1k
Serialize and Deserialize Binary Tree
29
120
Hard
15 mins
1.2k
Delete Node In BST
16
80
Moderate
10 mins
1k
Kth smallest node in BST
20
80
Moderate
15 mins
2.5k
Closest Binary Search Tree Value
11
40
Easy
15 mins
0.6k
Count Univalue Subtrees
Moderate
80
69 upvotes
Binary Tree Pruning
Moderate
80
23 upvotes
Symmetric Tree
Easy
40
41 upvotes
Delete Leaf Nodes With Value X
Moderate
80
16 upvotes
Minimum Depth Of Binary Tree
Moderate
80
11 upvotes
Maximum Width In Binary Tree
Moderate
80
20 upvotes
Reverse Level Order Traversal
Moderate
80
32 upvotes
Right View
Moderate
80
30 upvotes
Boundary Traversal of Binary Tree
Hard
120
156 upvotes
Level Order Traversal
Easy
40
47 upvotes
Check Identical Trees
Moderate
80
23 upvotes
Partial BST
Moderate
80
48 upvotes
Convert Bst To The Greater Sum Tree
Moderate
80
11 upvotes
Distance between two nodes of a Tree
Moderate
80
17 upvotes
Print Nodes at Distance K From a Given Node
Hard
120
13 upvotes
Convert binary tree to mirror tree
Easy
40
18 upvotes
Maximum Level Sum
Easy
40
2 upvotes
Cousins of Given Node in Binary Tree
Moderate
80
8 upvotes
Subtree of Another Tree
Easy
40
31 upvotes
Size of Largest BST in Binary Tree
Easy
40
63 upvotes
Preorder traversal of a BST
Moderate
80
23 upvotes
Serialize and Deserialize Binary Tree
Hard
120
29 upvotes
Delete Node In BST
Moderate
80
16 upvotes
Kth smallest node in BST
Moderate
80
20 upvotes
Closest Binary Search Tree Value
Easy
40
11 upvotes