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const data = require('./data')
const filterPlaces = (pass, entity, mark, min, max) => (
pass.forEach((p, i) => {
if (i > min && i <= max) {
p === mark
? entity.splice(entity.length / 2, entity.length)
: entity.splice(0, entity.length / 2)
}
})
)
const checkId = (p) => {
const pass = p.split('')
const row = [...Array(128).keys()]
const column = [...Array(8).keys()]
filterPlaces(pass, row, 'F', -1, 6)
filterPlaces(pass, column, 'L', 6, 9)
return ID = row[0] * 8 + column[0]
}
const ids = [...data].map(checkId).sort((a, b) => (a-b))
const missing = ids.filter((id, i) => ids[i] + 1 !== ids[i + 1]
&& id !== ids[ids.length-1] )[0] + 1
console.log(missing)
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