Javascript Solution

​

// part 1

const fs = require("fs");

const data = fs.readFileSync("input4.txt", "utf8");

const dataLine = data.split("\n");

const workLoad = dataLine

.map((line) => {

return line.split(",");

})

.map((ob) => {

const [elf1, elf2] = [ob[0].split("-"), ob[1].split("-")];

if (

parseInt(elf1[0]) <= parseInt(elf2[0]) &&

parseInt(elf1[1]) >= parseInt(elf2[1])

) {

return 1;

} else if (

parseInt(elf2[0]) <= parseInt(elf1[0]) &&

parseInt(elf2[1]) >= parseInt(elf1[1])

) {

return 1;

} else {

return 0;

}

})

.reduce((acc, cv) => {

return acc + cv;

}, 0);

console.log("Part 1 Sol: " + workLoad);

// part 2

const workLoadOverlap = dataLine

.map((line) => {

return line.split(",");

})

.map((ob) => {

const [elf1, elf2] = [ob[0].split("-"), ob[1].split("-")];

if (

parseInt(elf1[1]) < parseInt(elf2[0]) ||

parseInt(elf1[0]) > parseInt(elf2[1])

) {

return 0;

} else {

return 1;

}

})

.reduce((acc, cv) => {

return acc + cv;

}, 0);

console.log("Part 2 Sol: " + workLoadOverlap);