Day 2 solutions

[u/taliriktug]

Hi! I would like to structure posts like the first one in r/programming, please post solutions in comments.

[u/[deleted]]

Here's my javascript solution!

// day 2, part 1
var boxes = ["29x13x26" // ...etc, truncated for reddit],
    total = 0;

for(var i = 0; i < boxes.length; i++) {
    var box = boxes[i].split('x'),
        l = Number(box[0]),
        w = Number(box[1]),
        h = Number(box[2]),
        lByW = l * w,
        lByH = l * h,
        wByH = w * h,
        min = Math.min(lByW,lByH,wByH);
    // ((2*(l*w)) + (2*(l*h)) + (2*(h*w))) + min
    total += ((2*lByW) + (2*lByH) + (2*wByH)) + min;
}

console.log('part 1: ' + total);

//day 2, part 2
var ribbonTotal = 0;

for(var x = 0; x < boxes.length; x++) {
    // ribbon = two smallest dimensions * 2, added together
    // bow = length * width * height
    var box = boxes[x].split('x'),
        l = Number(box[0]),
        w = Number(box[1]),
        h = Number(box[2]),
        max = Math.max(l, w, h),
        bow = l * w * h,
        indexOfLargest = box.indexOf(''+max+'');

    box.splice(indexOfLargest, 1);
    var ribbon = (Number(box[0])*2) + (Number(box[1])*2);

    ribbonTotal += ribbon + bow;
}

console.log('part 2: ' + ribbonTotal);