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