Programming Task 1: Happy Number A happy number is a number defined by the following process: Starting with any positive integer, replace the number with the sum of the squares of its digits. Repeat the process until the number equals 1 (where it will stay), or it loops endlessly in a cycle which does not include 1. Those numbers for which this process ends in 1 are happy. Example: 13 is a happy number. Input: number 13 12132-19-10 1²+0²-1 11 is an unhappy number. Input: number -11 1²+1²-11-2 2²-4 4² = 16 12+6²-1+36-37 32+72 9+49-58 5²1 82 25 1 64-89 82 +92-64 +81-145 1² +42 +5²-1-16-25-42 4²22-16+4-20 22 +0²=4+0-4 (Endless Loop) Write a program in Java that prints Happy, if the input number is happy otherwise print unhappy. . Input: 7 Output: happy Java • Input: 26 Output: Unhappy Happy Numbers: 1, 7, 13, 28, 32 etc. Unhappy Numbers: 4, 9, 11, 26, 38 etc. Note: You are not allowed to use sets or hashset as we have not covered that in our syllabus.

C++ Programming: From Problem Analysis to Program Design
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ISBN:9781337102087
Author:D. S. Malik
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Chapter5: Control Structures Ii (repetition)
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Programming Task 1: Happy Number
A happy number is a number defined by the following process:
Starting with any positive integer, replace the number with the sum of the squares of its
digits.
Repeat the process until the number equals I (where it will stay), or it loops endlessly in a
cycle which does not include 1.
Those numbers for which this process ends in 1 are happy.
Example:
13 is a happy number.
Input: number 13
1²132-19-10
1² +0²-1
11 is an unhappy number.
Input: number -11
1²+1²-1+1-2
2²-4
4² = 16
12+6²-1+36-37
32+72 9+49-58
5²1 82 25 1 64-89
8² +92-64 +81 - 145
1² +4² +5²-1-16-25-42
4² +2216+4-20
22 +0²=4+0=4 (Endless Loop)
Java
Write a program in Java that prints IIappy, if the input number is happy otherwise print
unhappy.
Input: 7
Output: happy
Input: 26
Output: Unhappy
Happy Numbers: 1, 7, 13, 28, 32 etc.
Unhappy Numbers: 4, 9, 11, 26, 38 etc.
Note: You are not allowed to use sets or hashset as we have not covered that in our syllabus.
Transcribed Image Text:Programming Task 1: Happy Number A happy number is a number defined by the following process: Starting with any positive integer, replace the number with the sum of the squares of its digits. Repeat the process until the number equals I (where it will stay), or it loops endlessly in a cycle which does not include 1. Those numbers for which this process ends in 1 are happy. Example: 13 is a happy number. Input: number 13 1²132-19-10 1² +0²-1 11 is an unhappy number. Input: number -11 1²+1²-1+1-2 2²-4 4² = 16 12+6²-1+36-37 32+72 9+49-58 5²1 82 25 1 64-89 8² +92-64 +81 - 145 1² +4² +5²-1-16-25-42 4² +2216+4-20 22 +0²=4+0=4 (Endless Loop) Java Write a program in Java that prints IIappy, if the input number is happy otherwise print unhappy. Input: 7 Output: happy Input: 26 Output: Unhappy Happy Numbers: 1, 7, 13, 28, 32 etc. Unhappy Numbers: 4, 9, 11, 26, 38 etc. Note: You are not allowed to use sets or hashset as we have not covered that in our syllabus.
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