20 lines
412 B
JavaScript
20 lines
412 B
JavaScript
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const input = [1,17,0,10,18,11,6];
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const find = 30000000;
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let saidNums = new Map();
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input.slice(0,input.length-1).forEach((n,i) => saidNums.set(n,i));
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let lastNum = input[input.length-1];
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let i = input.length;
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while (i < find) {
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let thisNum = 0;
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if (saidNums.has(lastNum)) {
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thisNum = (i-1) - saidNums.get(lastNum);
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}
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saidNums.set(lastNum, i-1);
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lastNum = thisNum;
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i++;
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}
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console.log(lastNum)
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