How to find the least common multiple of a range of numbers?

Question

Given an array of two numbers, let them define the start and end of a range of numbers. For example, [2,6] means the range 2,3,4,5,6. I want to write javascrip

Answer 1

I think this gets the job done.

function leastCommonMultiple(min, max) {
    function range(min, max) {
        var arr = [];
        for (var i = min; i <= max; i++) {
            arr.push(i);
        }
        return arr;
    }

    function gcd(a, b) {
        return !b ? a : gcd(b, a % b);
    }

    function lcm(a, b) {
        return (a * b) / gcd(a, b);   
    }

    var multiple = min;
    range(min, max).forEach(function(n) {
        multiple = lcm(multiple, n);
    });

    return multiple;
}

leastCommonMultiple(1, 13); // => 360360