29 lines
543 B
JavaScript
29 lines
543 B
JavaScript
(() => {
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"use strict";
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// transpose :: [[a]] -> [[a]]
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const transpose = xs =>
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0 < xs.length ? (
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xs[0].map(
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(_, iCol) => xs.map(
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row => row[iCol]
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)
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)
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) : [];
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// ---------------------- TEST -----------------------
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const main = () =>
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JSON.stringify(
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transpose([
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[1, 2, 3],
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[4, 5, 6],
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[7, 8, 9]
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])
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);
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// MAIN ---
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return main();
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})();
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