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Rajesh Kumar Yadav
Rajesh Kumar Yadav Subscriber

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Intersection and Union of Array in JavaScript

#javascript #interview

Array and Union

What is union of Arrays?

Union of arrays would represent a new array combining all elements of the input arrays, without repetition of elements.

let arrOne = [10,15,22,80]; let arrTwo = [5,10,11,22,70,90]; // Union of Arrays let arrUnion = [...new Set([...arrOne, ...arrTwo])]; console.log(arrUnion);
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What is intersection of Arrays?

The intersection of two arrays is a list of distinct numbers which are present in both the arrays. The numbers in the intersection can be in any order.

let arrOne = [10,15,22,80]; let arrTwo = [5,10,11,22,70,90]; // Intersection of Arrays let arrIntersection = arrOne.filter((v) =>{ return arrTwo.includes(v); }); console.log(arrIntersection);
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Demo -

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