16 lines
434 B
Markdown
16 lines
434 B
Markdown
### arrayLcm
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Calculates the lowest common multiple (lcm) of an array of numbers.
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Use `Array.reduce()` and the `lcm` formula (uses recursion) to calculate the lowest common multiple of an array of numbers.
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```js
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const arrayLcm = arr =>{
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const gcd = (x, y) => !y ? x : gcd(y, x % y);
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const lcm = (x, y) => (x*y)/gcd(x, y);
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return arr.reduce((a,b) => lcm(a,b));
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}
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// arrayLcm([1,2,3,4,5]) -> 60
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// arrayLcm([4,8,12]) -> 24
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```
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