text: /*
  Write a function with two parameters. These parameters are arrays, holding numbers **stored as strings**.
  Your function should return **one** array, where every element is the sum of the two matching arguments's elements (ie: the first element in the resulting array equals the first element of the first argument plus the first element from the second argument).
  Note: If an element is empty, it should count as a 0.
  Ex: 
  sumArr( ["1", "2", "3"], ["2", "4", "1"] ) should return ["3", "6", "4"]
  sumArr( ["2", "7", "3"], ["2", "4", "9"] ) should return ["4", "11", "12"]
  sumArr( ["2", "7", "3", "8", "2"], ["2", "4", "9"] ) should return ["4", "11", "12", "8", "2"]
  */
  
  function sumArr(arrayA, arrayB) {
    // Your code here !
  }