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

title, tags

title	tags
similarity	array,math,beginner

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]