Consider an array of n distinct elements. Suppose I is input (think of I as an index between 1 to n). Write an algorithm to find an element e in the array such that the array has exactly I-1 elements lower than e. Your algorithm parallels quicksort, but does not actually sort the data! Explain how your algorithm works and what aspect of quicksort it does/does not do. [Example: array = {7, 3, 4, 6} Suppose I = 3. The element e is 6 since 3-1 = 2 numbers are less than 6.]

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
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Chapter1: Introduction
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Consider an array of n distinct elements. Suppose I is input (think of I as an index between 1 to n). Write an algorithm to find an element e in the array such that the array has exactly I-1 elements lower than e. Your algorithm parallels quicksort, but does not actually sort the data! Explain how your algorithm works and what aspect of quicksort it does/does not do.

[Example: array = {7, 3, 4, 6} Suppose I = 3. The element e is 6 since 3-1 = 2 numbers are less than 6.]   

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