18 lines
342 B
Markdown
18 lines
342 B
Markdown
### lcm
|
|
|
|
Returns the least common multiple of two numbers.
|
|
|
|
Use the greatest common divisor (GCD) formula and `Math.abs()` to determine the least common multiple.
|
|
The GCD formula uses recursion.
|
|
|
|
```js
|
|
const lcm = (x,y) => {
|
|
const gcd = (x, y) => !y ? x : gcd(y, x % y);
|
|
return Math.abs(x*y)/(gcd(x,y));
|
|
};
|
|
```
|
|
|
|
```js
|
|
lcm(12,7) -> 84
|
|
```
|