GATE | GATE-CS-2006 | Question 13
A scheme for storing binary trees in an array X is as follows. Indexing of X starts at 1 instead of 0. the root is stored at X. For a node stored at X[i], the left child, if any, is stored in X[2i] and the right child, if any, in X[2i+1]. To be able to store any binary tree on n vertices the minimum size of X should be.
(C) 2n + 1
(D) 2^n — 1
Explanation: See Question 2 of https://www.geeksforgeeks.org/data-structures-and-algorithms-set-7/
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