MarvinZ/PreInterviewTest.html

## PreInterviewTest.html
<!doctype html>

<html lang="en">

<head>
    <meta charset="utf-8">
    <title>Pre interview Test - Marvin Zumbado - marvinzzz@gmail.com</title>
    <meta name="description" content="Pre interview Test">
    <meta name="author" content="Marvinzzz@gmail.com">
</head>

<body>
    <p>
        This is just a test to flatten an array of arbitrarily nested arrays into a flat array of integers
    </p>

    <hr>
    <input type=button onClick="doMagic()" value="Do Magic">
    <hr>

    <script>
        function flattenME(a, r) {
            if (!r) { r = [] }
            for (var i = 0; i < a.length; i++) {
                if (a[i].constructor == Array) {
                    r.concat(flattenME(a[i], r));
                } else {
                    r.push(a[i]);
                }
            }
            return r;
        }

// test cases
        const tests = [
            {
                input: [[1, 2, [3]], 4],
                output: [1, 2, 3, 4]
            },
            {
                input: [],
                output: []
            },
            {
                input: ['a', ['b', 'c', 'd']],
                output: ['a', 'b', 'c', 'd']
            },
            {
                input: [1, [2, [3, [4, 5, [6, 7], 8], 9], 10, 11], 12],
                output: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12]
            }
        ]

        function doMagic() {
            alert('Please look at the console');
            tests.forEach(({ input, output }) => {
                console.log(flattenME(input));
                console.log(output);
                console.log(JSON.stringify(flattenME(input)) === JSON.stringify(output));
            })
        }


    </script>
</body>

</html>
	<!doctype html>

	<html lang="en">

	<head>
	<meta charset="utf-8">
	<title>Pre interview Test - Marvin Zumbado - marvinzzz@gmail.com</title>
	<meta name="description" content="Pre interview Test">
	<meta name="author" content="Marvinzzz@gmail.com">
	</head>

	<body>
	<p>
	This is just a test to flatten an array of arbitrarily nested arrays into a flat array of integers
	</p>

	<hr>
	<input type=button onClick="doMagic()" value="Do Magic">
	<hr>

	<script>
	function flattenME(a, r) {
	if (!r) { r = [] }
	for (var i = 0; i < a.length; i++) {
	if (a[i].constructor == Array) {
	r.concat(flattenME(a[i], r));
	} else {
	r.push(a[i]);
	}
	}
	return r;
	}

	// test cases
	const tests = [
	{
	input: [[1, 2, [3]], 4],
	output: [1, 2, 3, 4]
	},
	{
	input: [],
	output: []
	},
	{
	input: ['a', ['b', 'c', 'd']],
	output: ['a', 'b', 'c', 'd']
	},
	{
	input: [1, [2, [3, [4, 5, [6, 7], 8], 9], 10, 11], 12],
	output: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12]
	}
	]

	function doMagic() {
	alert('Please look at the console');
	tests.forEach(({ input, output }) => {
	console.log(flattenME(input));
	console.log(output);
	console.log(JSON.stringify(flattenME(input)) === JSON.stringify(output));
	})
	}


	</script>
	</body>

	</html>