2020-10-15 11:24:46 -07:00
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// https://projecteuler.net/problem=1
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2020-10-03 20:32:45 +05:30
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/* Multiples of 3 and 5
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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.
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Find the sum of all the multiples of 3 or 5 below the provided parameter value number.
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*/
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2020-10-15 11:24:46 -07:00
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const multiplesThreeAndFive = (num) => {
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2022-10-15 14:58:06 +05:30
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if (num < 1) throw new Error('No natural numbers exist below 1')
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2020-10-03 20:32:45 +05:30
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let total = 0
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// total for calculating the sum
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2022-10-15 14:58:06 +05:30
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for (let i = 1; i < num; i++) {
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2020-10-03 20:32:45 +05:30
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if (i % 3 === 0 || i % 5 === 0) {
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total += i
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}
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}
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return total
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}
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2021-10-09 13:18:40 +02:00
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export { multiplesThreeAndFive }
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