advent2022/d04/main.js

const fs = require('fs');
const readline = require('readline');

function ElfeSections(input) {
    let inputP = input.split('-').map(i => parseInt(i));
    this.min = inputP[0];
    this.max = inputP[1];
}

ElfeSections.prototype._partialContains = function(section) {
    return (this.min <= section.max && section.min <= this.max);
}

ElfeSections.prototype.partialContains = function(section) {
    return this._partialContains(section) || section._partialContains(this);
}

ElfeSections.prototype.fullyContains = function(section) {
    return ((section.min >= this.min && section.max <= this.max) ||
        (this.min >= section.min && this.max <= section.max));
}

async function main() {
    let fullyContains = 0;
    let partialContains = 0;

    for await (let line of readline.createInterface({ input: process.stdin })) {
        if (!line || !line.length)
            continue;
        let lineGroup = line.split(',').map(i => new ElfeSections(i));
        if (lineGroup[0].fullyContains(lineGroup[1]))
            fullyContains++;
        if (lineGroup[0].partialContains(lineGroup[1]))
            partialContains++;
    }
    console.log("Fully contains: "+ fullyContains);
    console.log("Partial contains: "+ partialContains);
};

(main());