adventofcode-2022-day-3.js

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FdFDGdDDDhhHdZDjhDmpwSPVZszpwZsVgsPRZs`;


const findSharedCharacter = (a, b) => {
    const left = new Set(a);
    return b.split('').filter(i => left.has(i))[0];
}

const characterScore = (s) => {
    const code = s.charCodeAt();
    return code > 96 ? code - 96 : code - 38;
}

const res = input
    .split('\n')
    .map(values => {
        const middlePosition = values.length / 2
        const left = values.substring(0, middlePosition)
        const right = values.substring(middlePosition, values.length)
        return characterScore(findSharedCharacter(left, right))
    })
    .reduce((a, b) => a + b)

console.log(res);