22 lines
644 B
JavaScript
22 lines
644 B
JavaScript
// https://www.codewars.com/kata/58791aa554a6783827000221/javascript
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const phoneMap = new Map();
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for (let name in phonebook) {
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phoneMap.set(phonebook[name], name);
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}
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function closestFriends(history) {
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const sum = new Map();
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history.map(entry => {
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const m = entry.match(/^(.*) (\d{2}):(\d{2}):(\d{2})$/);
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const [PHONE, H, M, S] = [1, 2, 3, 4];
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let duration = (+m[H]) * 3600 + (+m[M]) * 60 + (+m[S]);
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if (sum.has(m[PHONE])) {
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duration += +sum.get(m[PHONE]);
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}
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sum.set(m[PHONE], duration);
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});
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const top3 = [...sum].sort((a, b) => +b[1] - +a[1]).slice(0, 3);
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return top3.map(e => phoneMap.get(e[0]));
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}
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