generalistcodes/array_flatter.html

## array_flatter.html
<html>
<head>
    <link rel="stylesheet" type="text/css" href="https://cdnjs.cloudflare.com/ajax/libs/jasmine/2.3.3/jasmine.min.css">
    <script src="https://cdnjs.cloudflare.com/ajax/libs/jasmine/2.3.3/jasmine.min.js"></script>
    <script type="text/javascript"
            src="https://cdnjs.cloudflare.com/ajax/libs/jasmine/2.3.3/jasmine-html.min.js"></script>
    <script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/jasmine/2.3.3/boot.min.js"></script>
</head>
<body>
</body>
<script type="text/javascript">

    describe("Flatten an Array of Arbitrarily nested Arrays of Integers into a Flat Array of Integers", function () {

        it("Should return an empty array when empty array provided", function () {
            expect(Flatter.getFlatten([])).toEqual([]);
        });

        it("Should return an empty array when undefined value provided", function () {
            expect(Flatter.getFlatten(undefined)).toEqual([]);
        });

        it("Should return a flat array when a flat array is provided", function () {
            expect(Flatter.getFlatten([1, 2])).toEqual([1, 2]);
        });

        it("Should return [1,2,3,4] on [[1,2,[3]],4] provided", function () {
            expect(Flatter.getFlatten([[1, 2, [3]], 4])).toEqual([1, 2, 3, 4]);
        });

        it("Should return [1,4,5,6] on [[1,[4],5,6]] provided", function () {
            expect(Flatter.getFlatten([[1, [4], 5, 6]])).toEqual([1, 4, 5, 6]);
        });

        it("Should return [1] on [[[1]]] provided", function () {
            expect(Flatter.getFlatten([[[1]]])).toEqual([1]);
        });
    });

    /**
     * Flatten an array of arbitrarily nested arrays of integers into a
     * flat array of integers. e.g. [[1,2,[3]],4] -> [1,2,3,4]
     * @param  {Array} integers_array - Array of Numbers
     * @param  {Array} flatten_array  - Flatten array (for recursive mode) of Numbers
     * @return {Array}                - Merge/Flatten Array of Numbers
     */
    var Flatter = (function () {

        var flatten = function (integers_array, flatten_array) {

            var flatten_results = flatten_array || [];

            if (integers_array && integers_array.length > 0) {

                //iterate over the arrays and merge them recursively

                integers_array.forEach(function (value) {

                    if (typeof value === 'number') {

                        flatten_results.push(value);

                    } else if (value instanceof Array) {

                        flatten(value, flatten_results);

                    }

                });
            }


            return flatten_results; // Return all flatten Array of numbers.
        };

        return {
            getFlatten: flatten
        }

    })();


</script>
</html>
	<html>
	<head>
	<link rel="stylesheet" type="text/css" href="https://cdnjs.cloudflare.com/ajax/libs/jasmine/2.3.3/jasmine.min.css">
	<script src="https://cdnjs.cloudflare.com/ajax/libs/jasmine/2.3.3/jasmine.min.js"></script>
	<script type="text/javascript"
	src="https://cdnjs.cloudflare.com/ajax/libs/jasmine/2.3.3/jasmine-html.min.js"></script>
	<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/jasmine/2.3.3/boot.min.js"></script>
	</head>
	<body>
	</body>
	<script type="text/javascript">

	describe("Flatten an Array of Arbitrarily nested Arrays of Integers into a Flat Array of Integers", function () {

	it("Should return an empty array when empty array provided", function () {
	expect(Flatter.getFlatten([])).toEqual([]);
	});

	it("Should return an empty array when undefined value provided", function () {
	expect(Flatter.getFlatten(undefined)).toEqual([]);
	});

	it("Should return a flat array when a flat array is provided", function () {
	expect(Flatter.getFlatten([1, 2])).toEqual([1, 2]);
	});

	it("Should return [1,2,3,4] on [[1,2,[3]],4] provided", function () {
	expect(Flatter.getFlatten([[1, 2, [3]], 4])).toEqual([1, 2, 3, 4]);
	});

	it("Should return [1,4,5,6] on [[1,[4],5,6]] provided", function () {
	expect(Flatter.getFlatten([[1, [4], 5, 6]])).toEqual([1, 4, 5, 6]);
	});

	it("Should return [1] on [[[1]]] provided", function () {
	expect(Flatter.getFlatten([[[1]]])).toEqual([1]);
	});
	});

	/**
	* Flatten an array of arbitrarily nested arrays of integers into a
	* flat array of integers. e.g. [[1,2,[3]],4] -> [1,2,3,4]
	* @param {Array} integers_array - Array of Numbers
	* @param {Array} flatten_array - Flatten array (for recursive mode) of Numbers
	* @return {Array} - Merge/Flatten Array of Numbers
	*/
	var Flatter = (function () {

	var flatten = function (integers_array, flatten_array) {

	var flatten_results = flatten_array \|\| [];

	if (integers_array && integers_array.length > 0) {

	//iterate over the arrays and merge them recursively

	integers_array.forEach(function (value) {

	if (typeof value === 'number') {

	flatten_results.push(value);

	} else if (value instanceof Array) {

	flatten(value, flatten_results);

	}

	});
	}


	return flatten_results; // Return all flatten Array of numbers.
	};

	return {
	getFlatten: flatten
	}

	})();


	</script>
	</html>