text: var cheeses = ['cheddar', 'swiss', 'provolone', 'gouda', 'stinky cheese'];
  
  for (var cheese in cheeses) {
    console.log(cheeses[cheese] + ' backwards is: ' + cheeses[cheese].split('').reverse().join(''));
  }
  
  for (var i = cheeses.length -1; i >= 0; i--) {
    var cheeseLetters = [];
    cheeseLetters = cheeses[i].split('');
    if (cheeseLetters.indexOf('a') !== -1) {
      console.log(cheeses[i] + ' contains the letter A!');
    }
  }
  