Write, Compile and Execute a Java method that computes whether a given number is happy or sad.

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
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In number theory, a happy number is a number which eventually reaches 1 when replaced by the sum of the
square of each digit. For instance, 13 is a happy number because
12 + 3? = 10 and 1² + o² = 1.
On the other hand, 4 is not a happy number because the sequence starting with
4 = 16 and 12 + 62² = 37
and eventually reaches to 4 that is the number that started the sequence, and so the process continues in an
infinite cycle without ever reaching 1.
Write, Compile and Execute a Java method that computes whether a given number is happy or sad.
Transcribed Image Text:In number theory, a happy number is a number which eventually reaches 1 when replaced by the sum of the square of each digit. For instance, 13 is a happy number because 12 + 3? = 10 and 1² + o² = 1. On the other hand, 4 is not a happy number because the sequence starting with 4 = 16 and 12 + 62² = 37 and eventually reaches to 4 that is the number that started the sequence, and so the process continues in an infinite cycle without ever reaching 1. Write, Compile and Execute a Java method that computes whether a given number is happy or sad.
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