22 lines
526 B
JavaScript
22 lines
526 B
JavaScript
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// https://www.freecodecamp.org/learn/coding-interview-prep/algorithms/find-the-symmetric-difference
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function sym() {
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const symDiff = {};
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for (let [_, arr] of Object.entries(arguments)) {
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const set = {};
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arr.forEach((e) => {
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set[e] = true;
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});
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for (let [e, _] of Object.entries(set)) {
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if (symDiff[e]) {
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delete symDiff[e];
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} else {
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symDiff[e] = true;
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}
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}
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}
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return Object.keys(symDiff).map((e) => Number(e));
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}
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console.log(sym([1, 2, 3, 3], [5, 2, 1, 4]));
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