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February 6, 2017 20:30
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Get common factors of an array of numbers
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function getCommonFactorsOf(arrayOfNumbers) { | |
var numbers = arrayOfNumbers; | |
var length = numbers.length; | |
var minor = 0; | |
for (let i=0; i < length; i++) { | |
let number = numbers[i]; | |
if (i===0 || number < minor) { | |
minor = number; | |
} | |
} | |
var arrFactors = []; | |
for (let i=0; i < length; i++) { | |
let factor = numbers[i]; | |
let isFactor = factor <= minor ? true : false; | |
let iterator = 0; | |
while (isFactor === true && iterator < length) { | |
let number = numbers[iterator]; | |
let result = number % factor === 0; | |
if (!result) { | |
isFactor = false; | |
} | |
iterator++; | |
} | |
if (isFactor === true) { | |
arrFactors.push(number); | |
} | |
} | |
return arrFactors.length ? arrFactors : null; | |
} |
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