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Problem1.js
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27 lines (24 loc) · 815 Bytes
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// https://projecteuler.net/problem=1
/* Multiples of 3 and 5
If we list all the natural numbers below 10 that are multiples of 3 or 5, we get 3, 5, 6 and 9. The sum of these multiples is 23.
Find the sum of all the multiples of 3 or 5 below the provided parameter value number.
*/
const readline = require('readline')
const multiplesThreeAndFive = (num) => {
let total = 0
// total for calculating the sum
for (let i = 0; i < num; i++) {
if (i % 3 === 0 || i % 5 === 0) {
total += i
}
}
return total
}
const rl = readline.createInterface({
input: process.stdin,
output: process.stdout
})
rl.question('Enter a number: ', function (num) {
console.log(multiplesThreeAndFive(num)) // multiples3_5 function to calculate the sum of multiples of 3 and 5 within num
rl.close()
})