Preorder to postorder conversion BST question 
0 
507 

Binary Tree by level with each node represented by a circle 
3 
439 

Level order Traversal of a tree 
8 
646 

Splay Tree 
2 
897 

Cut vertices 
1 
540 

Ascending Order 
35 
3081 
Amazon  Google  Microsoft  Ola Cabs

Implementation of Set 
5 
1499 
Amazon

Implementation of Map 
3 
1485 
Amazon

Comparison of Red Black Tree and AVL Tree 
1 
1703 
Amazon

Difference between BFS abd DFS. 
12 
1650 
Thoughtworks

Construct a tree and find the nearest common parent node 
3 
797 
JUSPAY

Construct a tree and find depth where maximum no. of nodes are present 
2 
812 
JUSPAY

Level order traversal for nary tree. 
4 
844 
JUSPAY

Diameter of an nary tree 
1 
834 
JUSPAY

How to traverse an nary tree? 
2 
841 
JUSPAY

How to find depth of a nary tree. 
2 
835 
JUSPAY

What is Narray tree ? 
7 
975 
JUSPAY

Is Binary tree a Binary search tree? 
6 
1321 

How to form a parse tree of a given mathematical expression? 
0 
658 

What kind of tree structure for a set of strings? 
0 
442 

Level Order Traversal 
22 
3246 
Amazon

Construct Mirror Tree 
16 
2042 
Amazon

Symmetry of Binary Trees 
7 
1547 
Amazon

sum equal to any of root to leaf 
15 
2060 
Amazon

Find maximum possible sum 
5 
1500 
Directi

Difference between BST and tries. 
2 
1379 
Directi

Give the use cases of binary tree? 
2 
1026 
Directi

What is the advantage of an Mary tree over binary tree? 
1 
1384 
Directi

Maximum path sum between two leaves of a binary tree 
3 
1453 
Directi

Farthest Nodes in Complete Binary tree 
3 
1005 
ongc

Binary Tree 
8 
2990 
Directi  Flipkart  Microsoft  Samsung

Which data structure suits best to implement a file system structure? 
1 
2193 
Oracle

Write a list of all data structures and explain each of them along with their applications? 
5 
2368 
Oracle

What is segmented tree? 
3 
3005 
Amazon  Directi  Expedia

Write an algorithm to check if binary tree is binary search tree? 
15 
4130 
Amazon

What is Trie? 
3 
1767 
Amazon

What is isomorphic binary search tree? 
3 
1720 
Amazon

Write algorithm to find mirror image of Nary tree? 
2 
1417 
Amazon

What is Mirror image of binary tree? 
5 
1471 
Amazon

How to clone Binary tree with random pointer? 
3 
1521 
Amazon

How to find level with the maximum sum in a binary tree? 
3 
1545 
Amazon

Tree creation 
2 
955 

Fenwick Tree 
1 
1303 
Flipkart
