GATE CSE
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asked in DS by Boss (8.6k points)   | 94 views

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I confirm that II is also True apart from I and III.

It depends on the definition of Complete BT the Question setter is following : for II to be true.

Most Author's define it as : Complete BT is a BT in which every node has 2 or 0 children.

Some Author's define it as : Complete BT is a BT where in all nodes have two children and you can remove children from rightmost node as well.

Eg:

Root has A,B. A has C,D and B has E,F---> complete BT

Now in this example internal nodes=3 and leaves=4

 

Root has A,B. A has C,D and B has E ----> rightmost child F removed--->still a complete BT.

Now in second example internal nodes=3 and leaves=3.

 

Hence GATE Questions always specify the convention we are supposed to follow.
answered by Active (2.2k points)  
edited by


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