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Roots of the tree having minimum height
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# Roots of the tree having minimum height

Contributed by
Ambuj verma
Medium
0/80
Avg time to solve 25 mins
Success Rate 75 %
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## Problem Statement

#### A tree is a connected acyclic graph. The height of a rooted tree is the maximum value of the distance between the root and all nodes of the tree.

Detailed explanation ( Input/output format, Notes, Constraints, Images )
##### Sample Input 1:
``````2
3
1 2
2 3
4
1 2
3 1
4 1
``````
##### Sample Output 1:
``````2
1
``````
##### Explanation for Sample Input 1:
``````For the first test case, if we root the tree at Node 2, the height of the resultant tree is 1 which is the minimum possible height.
For the second test case, if we root the tree at Node 1, the height of the resultant tree is 1 which is the minimum possible height.
``````
##### Sample Input 2:
``````2
4
1 3
2 3
4 2
2
1 2
``````
##### Sample Output 2:
``````2 3
1 2
``````
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