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Define a function in Scheme or relation in Prolog called parity that does the following If the number is positive, add 1 to the total . If the number is negative, add -1 to the total . If the number is O or the list is empty, then add 0 to the total Return the total of adding 1 and -1

Define a function in Scheme or relation in Prolog called parity that does the following If the number is positive, add 1 to the total . If the number is negative, add -1 to the total . If the number is O or the list is empty, then add 0 to the total Return the total of adding 1 and -1

Database System Concepts
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
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Define a function in Scheme or relation in Prolog called parity that does the following . If the number is positive, add 1 to the total . If the number is negative, add -1 to the total If the number is O or the list is empty, then add 0 to the total Return the total of adding 1 and -1. Examples 10 20 30 returns 3 because each number is positive and there are 3 so it would become 1 + 1 + 1 = 3. -10 20-30 returns -1 because we have 2 negative numbers and 1 positive number. The result would become -1 + 1 + (-1) = -1. 10 returns 1. 00 returns 0. Edit View Insert Format Tools Table 12pt Paragraph B IUA 2 T² :
Transcribed Image Text:Define a function in Scheme or relation in Prolog called parity that does the following . If the number is positive, add 1 to the total . If the number is negative, add -1 to the total If the number is O or the list is empty, then add 0 to the total Return the total of adding 1 and -1. Examples 10 20 30 returns 3 because each number is positive and there are 3 so it would become 1 + 1 + 1 = 3. -10 20-30 returns -1 because we have 2 negative numbers and 1 positive number. The result would become -1 + 1 + (-1) = -1. 10 returns 1. 00 returns 0. Edit View Insert Format Tools Table 12pt Paragraph B IUA 2 T² :
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