Answered: Modify the selection sort function…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Question

Modify the selection sort function developed in this chapter so that it accepts a second optional argument, which may be either 'up' or 'down'. If the argu-ment is 'up', sort the data in ascending order. If the argument is 'down', sort the data in descending order. If the argument is missing, the default case is to sort the data in ascending order. (Be sure to handle the case of invalid arguments, and be sure to include the proper help information in your function.)

Here is the given function which need to be mofified:

function out = ssort(a)

nvals = length(a);

iptr = ii;

for jj = ii+1:nvals

if a(jj) < a(iptr)

iptr = jj;

end

if ii ~= iptr

temp = a(ii);

a(ii) = a(iptr);

a(iptr) = temp;

end

out = a;

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