How to resolve the algorithm Factors of an integer step by step in the Red programming language
Published on 12 May 2024 09:40 PM
How to resolve the algorithm Factors of an integer step by step in the Red programming language
Table of Contents
Problem Statement
Compute the factors of a positive integer. These factors are the positive integers by which the number being factored can be divided to yield a positive integer result. (Though the concepts function correctly for zero and negative integers, the set of factors of zero has countably infinite members, and the factors of negative integers can be obtained from the factors of related positive numbers without difficulty; this task does not require handling of either of these cases). Note that every prime number has two factors: 1 and itself.
Let's start with the solution:
Step by Step solution about How to resolve the algorithm Factors of an integer step by step in the Red programming language
Source code in the red programming language
Red []
factors: function [n [integer!]] [
n: absolute n
collect [
repeat i (sq: sqrt n) - 1 [
if n % i = 0 [
keep i
keep n / i
]
]
if sq = sq: to-integer sq [keep sq]
]
]
foreach num [
24
-64 ; negative
64 ; square
101 ; prime
123456789 ; large
][
print mold/flat sort factors num
]
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