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Which node is the Leaf node in the following ternary tree?

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in Data Structures & Algorithms I by (111k points)
Which node is the Leaf node in the following ternary tree?

(a) A

(b) B

(c) D

(d) G

My enquiry is from 1 in portion Trees of Data Structures & Algorithms I

This question was addressed to me in an interview.

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The correct answer is (d) G

The best I can explain: Leaf node is any node that does not contain any children. Since Node G is the node without any children, So G is called Leaf Node. While Node A is root node and Node B, Node C, Node D is parent node of their children.

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