1
Preorder Traversal
Easy
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2
Inorder Traversal
Easy
1

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3
Postorder Traversal
Easy
0

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4
Height of Binary Tree
Easy
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5
Determine if Two Trees are Identical
Easy
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6
Children Sum Parent
Medium
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7
Level order traversal
Easy
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8
Level order traversal Line by Line
Easy
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9
Level order traversal in spiral form
Easy
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10
Maximum Width of Tree
Easy
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11
Check for Balanced Tree
Easy
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12
Left View of Binary Tree
Easy
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13
Right View of Binary Tree
Easy
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14
Lowest Common Ancestor in a Binary Tree
Medium
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15
Diameter of Binary Tree
Easy
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16
Vertical Width of a Binary Tree
Easy
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17
Mirror Tree
Easy
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18
Check if subtree
Medium
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19
Make Binary Tree From Linked List
Medium
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20
Binary Tree to DLL
Hard
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21
Binary Tree to CDLL
Medium
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22
Connect Nodes at Same Level
Medium
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23
Construct Binary Tree from Parent Array
Medium
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24
Tree from Postorder and Inorder
Medium
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25
Foldable Binary Tree
Medium
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26
Maximum path sum from any node
Medium
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27
Maximum difference between node and its ancestor
Medium
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28
Count Number of SubTrees having given Sum
Medium
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29
Serialize and Deserialize a Binary Tree
Medium
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30
Node at distance
Medium
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31
ZigZag Tree Traversal
Easy
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32
Maximum sum of Non-adjacent nodes
Medium
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