<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>033</title>
</head>
<body>
</body>
<script type="text/javascript">
(function () {
var reverseArray = function(x,indx,str){
return indx == 0 ? str : reverseArray(x, --indx,(str+=""+x[indx]));
}
var arr = ['apple','orange','peach','lime'];
var str = reverseArray(arr,arr.length,"");
console.log(str);
var arr2 = ['car','boat','sun','computer'];
str = reverseArray(arr2, arr2.length, "");
console.log(str);
})();
(function () {
var fibonacci = function(n) {
return n <2 ? n:fibonacci(n-1) + fibonacci(n-2);
}
console.log(fibonacci(10));
})();
(function () {
var orderArray = function(x,indx,str){
return indx == x.length -1 ? str:orderArray(x,++indx, str+=x[indx] + " ");
}
var arr = ['apple','orange','peach','lime'];
var str = orderArray(arr,-1,"");
console.log(str);
})();
(function () {
function factorial (num) {
if (num == 0) {
return 1;
} else {
return (num * factorial(num - 1));
}
}
console.log(factorial(5));
})();
</script>
</html>
