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32 lines
785 B
Markdown
32 lines
785 B
Markdown
# intersection
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Returns the intersection of two arrays.
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This function takes two arrays and returns a new array containing the elements that are
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present in both arrays. It effectively filters out any elements from the first array that
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are not found in the second array.
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## Signature
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```typescript
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function intersection<T>(firstArr: T[], secondArr: T[]): T[];
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```
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### Parameters
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- `firstArr` (`T[]`): The first array to compare.
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- `secondArr` (`T[]`): The second array to compare.
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### Returns
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(`T[]`) A new array containing the elements that are present in both arrays.
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## Examples
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```typescript
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const array1 = [1, 2, 3, 4, 5];
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const array2 = [3, 4, 5, 6, 7];
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const result = intersection(array1, array2);
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// result will be [3, 4, 5] since these elements are in both arrays.
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```
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