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mergeSortedArrays javascript Code Snippet in 2023

arrayintermediate

Last Updated: 1 March 2023

Merges two sorted arrays into one.

  • Use the spread operator (...) to clone both of the given arrays.
  • Use Array.from() to create an array of the appropriate length based on the given arrays.
  • Use Array.prototype.shift() to populate the newly created array from the removed elements of the cloned arrays.
const mergeSortedArrays = (a, b) => { const _a = [...a], _b = [...b]; return Array.from({ length: _a.length + _b.length }, () => { if (!_a.length) return _b.shift(); else if (!_b.length) return _a.shift(); else return _a[0] > _b[0] ? _b.shift() : _a.shift(); }); };
mergeSortedArrays([1, 4, 5], [2, 3, 6]); // [1, 2, 3, 4, 5, 6]

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