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30 lines
628 B
JavaScript
30 lines
628 B
JavaScript
4 years ago
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const { readInput } = require("./util");
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const { lines } = readInput();
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function binToInt(binString, oneChar = "1") {
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const binArr = Array.from(binString).reverse();
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let num = 0;
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for (let i = 0; i < binArr.length; i++) {
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if (binArr[i] === oneChar) {
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num += 2 ** i;
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}
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}
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return num;
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}
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function seatId(pass) {
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const row = binToInt(pass.slice(0, 7), "B");
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const col = binToInt(pass.slice(7, 11), "R");
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return row * 8 + col;
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}
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for (const line of lines.slice(0, 10)) {
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console.log(line, seatId(line));
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}
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const seatIds = lines.map(seatId);
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console.log(seatIds);
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console.log(Math.max(...seatIds));
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