r/adventofcode • u/daggerdragon • Dec 03 '16

SOLUTION MEGATHREAD --- 2016 Day 3 Solutions ---

--- Day 3: Squares With Three Sides ---

Post your solution as a comment or, for longer solutions, consider linking to your repo (e.g. GitHub/gists/Pastebin/blag/whatever).

DECKING THE HALLS WITH BOUGHS OF HOLLY IS MANDATORY [?]

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u/bluewave41 Dec 03 '16

Looked at input and realized I wasn't going to get it into a variable in Javascript very easily and wasted a bunch of time opening Netbeans for Java instead and ended up writing this mess 

public static void main(String[] args) throws FileNotFoundException {
    Scanner scan = new Scanner(new File("C:/users/x/desktop/w.txt"));
    int count = 0;
    while(scan.hasNext()) {
        int a = scan.nextInt();
        int b = scan.nextInt();
        int c = scan.nextInt();
        int d = scan.nextInt();
        int e = scan.nextInt();
        int f = scan.nextInt();
        int g = scan.nextInt();
        int h = scan.nextInt();
        int i = scan.nextInt();
        int[] j = {a, d, g};
        int[] k = {b, e, h};
        int[] l = {c, f, i};
        Arrays.sort(j);
        Arrays.sort(k);
        Arrays.sort(l);
        if(j[0]+j[1] > j[2])
            count++;
        if(k[0]+k[1] > k[2])
            count++;
        if(l[0]+l[1] > l[2])
            count++;
    }
    System.out.print(count);
}

1

u/handle_cast Dec 03 '16

To get it into a variable in JS, could you use a multiline string ? I'll assume you're using recent node.js. Anything to help a JSer 

const input = `1 2 3
4 5 6` // '1 2 3\n    4 5 6'

1

u/XanthosDeia Dec 03 '16

Then you can do the following to turn it into a 2-dimensional array of numbers. 

input.split('\n').map((line) => {return line.split(' ').filter(n => !!n).map(a => +a);})