gistfile1.js

function fib (n, x, y) {
    if (n < 1) return;
    console.log(n, x);
    n--;
    fib(n, y, x+y);
}

fib (100, 0, 1);

---

(function () {
    var arr = [50, 2, 8, 3, 946, 5, 1, 9];
 
    arr = arr.join('').split('');
    arr = arr.sort(function (a, b) {
        if (a > b) {
            return -1;
        }
        if (a < b) {
            return 1;
        }
 
        return 0;
    });
    console.log(arr.join(''));
 
})();

___

(function () {
        
    function cointoss () {
        return parseInt(Math.random() * 2, 10) === 0;
    }

    function rnd () {
        var arr = [1, 2, 3, 4, 5, 6, 7, 8, 9];
        var str = '';
        var sum = 0;

        function add(nro) {
            sum += nro;
            str += ' + ' + nro;
        }

        function reduce(nro) {
            sum -= nro;
            str += ' - ' + nro;
        }

        function decide(nro) {
            if (cointoss()) {
                add(nro);
            } else {
                reduce(nro);
            }
        }

        for (var i = 0; i < arr.length; i++) {
            if (i === 0) {
                sum += 1;
                str += '1';
            } else {
                if (cointoss()) {
                    decide(parseInt('' + arr[i] + arr[i+1], 10));
                    i++;
                } else {
                    decide(arr[i]);
                }
            }
        }

        if (sum === 100) {
            console.log(str, sum);
        } else {
            rnd();
        }
    }

    rnd();
})();