30-seconds-of-code/snippets/similarity.md

title, tags, expertise, cover, firstSeen, lastUpdated

title	tags	expertise	cover	firstSeen	lastUpdated
Array similarity	array,math	beginner	blog_images/dark-leaves-5.jpg	2017-12-17T16:41:31+02:00	2020-10-22T20:24:30+03:00

Returns an array of elements that appear in both arrays.

• Use Array.prototype.includes() to determine values that are not part of values.
• Use Array.prototype.filter() to remove them.

const similarity = (arr, values) => arr.filter(v => values.includes(v));

similarity([1, 2, 3], [1, 2, 4]); // [1, 2]