function max(numbers) {
  number1 = numbers[0];

  for (let i = 0; i < numbers.length; i++) {
   let number2 = numbers[i];
   if (number2 > number1) {
     number1 = number2;
   }
 }
 return number1;
}


function min(numbers) {
 number1 = numbers[0];

 for (let i = 0; i < numbers.length; i++) {
   let number2 = numbers[i];
   if (number2 < number1) {
     number1 = number2;
   }
 }
 return number1
}

function average(numbers) {
  let sum = 0;

  for (let i=0; i < numbers.length; i++) {
    sum += numbers[i];
  }
  return (sum / numbers.length);
}

function fizzBuzz(countTo) {
let fizzArray = [ ];

  for (let i = 1; i <= countTo; i++) {
    if (i % 15 === 0) {
     fizzArray.push("fizzbuzz");
    }
    else if (i % 3 === 0) {
      fizzArray.push("fizz");
    }
    else if (i % 5 === 0) {
      fizzArray.push("buzz");
    }
    else {
      fizzArray.push(i);
    }
  }
  return fizzArray;
}