Katas

/**************************
Is there a vowel in there?
**************************/
function isVow(a){

  for(let i=0; i<a.length; i++){
      switch(a[i]){
        case 97:
          a[i] = 'a';
          break;
        case 101:
          a[i] = 'e';
          break;
        case 105:
          a[i] = 'i';
          break;
        case 111:
          a[i] = 'o';
          break;
        case 117:
          a[i] = 'u';
          break;
      }
  }

  return a;
}

/**************************
List Filtering
**************************/

function filter_list(l) {
  // Return a new array with the strings filtered out
  let auxArray = [];
  for(let i=0; i<l.length; i++){
    if(typeof(l[i]) === 'number'){
      auxArray.push(l[i]);
    }
  }
  return auxArray;
}