29 lines
822 B
Markdown
29 lines
822 B
Markdown
---
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title: mergeSortedArrays
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tags: array,intermediate
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firstSeen: 2020-12-27T22:55:37+02:00
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lastUpdated: 2020-12-27T22:55:37+02:00
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---
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Merges two sorted arrays into one.
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- Use the spread operator (`...`) to clone both of the given arrays.
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- Use `Array.from()` to create an array of the appropriate length based on the given arrays.
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- Use `Array.prototype.shift()` to populate the newly created array from the removed elements of the cloned arrays.
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```js
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const mergeSortedArrays = (a, b) => {
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const _a = [...a],
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_b = [...b];
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return Array.from({ length: _a.length + _b.length }, () => {
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if (!_a.length) return _b.shift();
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else if (!_b.length) return _a.shift();
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else return _a[0] > _b[0] ? _b.shift() : _a.shift();
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});
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};
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```
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```js
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mergeSortedArrays([1, 4, 5], [2, 3, 6]); // [1, 2, 3, 4, 5, 6]
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```
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