ds-algo-study/DS-n-Algos/Arrays/basic-examples/problems/07-intersect-arrays.js

Just experimenting with publishing a package

/******************************************************************************
Write a function intersect(arr1, arr2) that takes in two arrays and returns a
new array containing the elements common to both arr1 and arr2.

Hint: use indexOf

Examples:

intersect(['a', 'b', 'c', 'd'], ['b', 'd', 'e']) => [ 'b', 'd' ]
intersect(['a', 'b', 'c'], ['x', 'y', 'z']) => []
*******************************************************************************/

function intersect(arr1, arr2) {
  let commonEles = [];

  for (let i = 0; i < arr1.length; i++) {
    let ele = arr1[i];
    if (arr2.indexOf(ele) > -1) {
      commonEles.push(ele);
    }
  }

  return commonEles;
}

/**************DO NOT MODIFY ANYTHING UNDER THIS  LINE*************************/
module.exports = intersect;