Why do we want the loop index i in line 2 of BUILD-MAX-HEAP to decrease from A.length/2

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Why do we want the loop index i in line 2 of BUILD-MAX-HEAP to decrease from ⌊A.length/2⌋ to 1 rather than increase from 1 to ⌊A.length/2⌋?

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Introduction to Algorithms

ISBN: 978-0262033848

3rd edition

Authors: Thomas H. Cormen, Charles E. Leiserson, Ronald L. Rivest

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Question Posted: Feb 25, 2020 05:24 AM

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Why do we want the loop index i in line 2 of BUILD-MAX-HEAP to decrease from A.length/2

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In max heap we want the largest element to be at index 1 so if we start t...View the full answer

Introduction to Algorithms

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