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* added an algo which finds unique element in an array * fixed code style * updated changes and add some explanations * Delete package-lock.json * Delete package.json * added question link if anyone want to solve * updated changes * added package.json * used JSDoc comment --------- Co-authored-by: madhuredra <madhuredra.tiwari@zemosolabs.com>
14 lines
406 B
JavaScript
14 lines
406 B
JavaScript
/**
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* Finds the unique element in an array where all other elements are repeated twice.
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*
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* @param {number[]} arr - The input array of integers.
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* @returns {number} The unique element.
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*
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* @example
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* const arr = [1, 2, 1, 2, 3];
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* const uniqueElement = findUniqueElement(arr); // Returns 3
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*/
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const findUniqueElement = (arr) => arr.reduce((acc, val) => acc ^ val, 0)
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export { findUniqueElement }
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