AdventOfCode 2017 day 2-2

adventofcode2017_day2_2.js

function calc(input) {
    var checksum = 0;
    input.split('\n').forEach(row => {
        var nums = row.split('\t').map(n => parseInt(n));
        checksum += findIntDivs(nums).reduce((a, b) => a + b, 0);
    });
    return checksum;
}

function findIntDivs(nums) {
    var divs = [];
    for (var i = 0; i < nums.length - 1; i++) {
        var a = nums[i];
        for (var j = i + 1; j < nums.length; j++) {
            var b = nums[j];
            var min = Math.min(a, b);
            var max = Math.max(a, b);
            if (max % min == 0) {
                divs.push(max / min);
            }
        }
    }
    return divs;
}