// Some extra problem solutions, with few comments.

function main() {

  var a = reverse(new Array(1, 2, 3));
  var i = 0;
  for (i=0; i<a.length; i=i+1) {
    formOutput(a[i] + "\n");
  }
  formOutput("End problem 1 output.\n");

  // problem 2
  var a = new Array(50); // array for problem 2
  var i = 0; // array index
  var n = 0; // number entered
  n = numberInput("Enter a number or 0 to quit: ");
  while (n != 0) {
    if (i >= 50) {
      alert("More than 50 numbers.");
    } else {
      a[i] = n;
      i = i + 1;
    }
    n = numberInput("Enter a number or 0 to quit: ");
  }
  i = i - 1;
  while (i >= 0) {
    formOutput(a[i] + "\n");
    i = i - 1;
  }
  // end problem 2

  formOutput("Problem 5: ");
  formOutput(countLess(2, new Array(1, 2, 3, 4)) + "\n\n");

  formOutput("Problem 6: ");
  formOutput(whereLess(2, new Array(5, 2, 6, 1, 7)) + "\n");
}

function reverse(a) {
  var i = 0;
  var copy = new Array(a.length);
  for (i=0; i<copy.length; i=i+1) {
    copy[i] = a[a.length - 1 - i];
  }
  return copy;
}


function countLess(v, a) {
  var i = 0;
  var numLess = 0;
  for (i=0; i < a.length; i=i+1) {
    if (a[i] < v) {
      numLess = numLess + 1;
    }
  }
  return numLess;
}

function whereLess(v, a) {
  var i = 0;
  for (i=1; i < a.length; i=i+1) {
    if (a[i] < v) {
      return i;
    }
  }
  return i;
}