Find Intersection

gistfile1.txt

Input: ["1, 3, 4, 7, 13", "1, 2, 4, 13, 15"]
Output: 1,4,13


function FindIntersection(strArr) { 

  // code goes here  
  const [leftSide,rightSide]=strArr
  const right=rightSide.split(',').map(el=>el.trim())
  const left=leftSide.split(',').map(el=>el.trim())

  const filteredArray = left.filter(value => right.includes(value))

  return filteredArray.join(',')

}
   
// keep this function call here 
console.log(FindIntersection(readline()));