40 lines
1.1 KiB
JavaScript
40 lines
1.1 KiB
JavaScript
// https://www.codewars.com/kata/holiday-ii-plane-seating/javascript
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function planeSeat(a) {
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const m = a.match(/^(\d+)(\w+)$/);
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const v = conditionalRange(+m[1], [
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{ min: 1, max: 20, data: 'Front' },
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{ min: 21, max: 40, data: 'Middle' },
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{ min: 41, max: 60, data: 'Back' },
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], false);
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const h = conditionalRange('ABCDEFGHK'.indexOf(m[2]), [
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{ min: 0, max: 2, data: 'Left' },
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{ min: 3, max: 5, data: 'Middle' },
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{ min: 6, max: 8, data: 'Right' },
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], false);
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return v && h ? [v, h].join`-` : 'No Seat!!';
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}
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// https://gist.github.com/gkucmierz/66ed209add3343db76482040d93d8a03
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const conditionalRange = (n, ranges, def) => {
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for (let i = 0; i < ranges.length; ++i) {
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const r = ranges[i];
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if ('max' in r) {
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if ('min' in r) {
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if (r.min <= n && n <= r.max) return r.data;
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} else {
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if (n <= r.max) return r.data;
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}
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}
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}
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for (let i = ranges.length-1; 0 <= i; --i) {
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const r = ranges[i];
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if ('min' in r) {
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if (!('max' in r)) {
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if (r.min <= n) return r.data;
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}
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}
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}
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return def;
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};
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