Udacity_JavaScript_Array.js

/*
 * Programming Quiz: Another Type of Loop (6-8)
 *
 * Use the existing `test` variable and write a `forEach` loop
 * that adds 100 to each number that is divisible by 3.
 *
 * Things to note:
 *  - you must use an `if` statement to verify code is divisible by 3
 *  - you can use `console.log` to verify the `test` variable when you're finished looping
 */

var test = [12, 929, 11, 3, 199, 1000, 7, 1, 24, 37, 4,
    19, 300, 3775, 299, 36, 209, 148, 169, 299,
    6, 109, 20, 58, 139, 59, 3, 1, 139
];

// Write your code here
test.forEach(function(value,index) {
    if (value %3 === 0) {
        value += 100;
        test.splice(index, 1,value);
    } console.log(test);
});


var myArray = [1, 2, 3, 4, 5];
var newArray = myArray.map(functin(elem) {
    elem = elem + 100;
    return elem;
}

                           /*
 * Programming Quiz: I Got Bills (6-9)
 *
 * Use the .map() method to take the bills array below and create a second array
 * of numbers called totals. The totals array should contains each amount from the
 * bills array but with a 15% tip added. Log the totals array to the console.
 *
 * For example, the first two entries in the totals array would be:
 *
 * [57.76, 21.99, ... ]
 *
 * Things to note:
 *  - each entry in the totals array must be a number
 *  - each number must have an accuracy of two decimal points
 */

var bills = [50.23, 19.12, 34.01,
    100.11, 12.15, 9.90, 29.11, 12.99,
    10.00, 99.22, 102.20, 100.10, 6.77, 2.22
];
var totals = bills.map(function(elem) {
    elem += elem*0.15;
    elem = elem.toFixed(2);
    return Number(elem);
});

for (var row = 0; row < donumBox.length; row++) {
    for (var column = 0; column < donutBox[row].length; column++ {
         console.log(donutBox[row][column]);
    }
}

/*
 * Programming Quiz: Nested Numbers (6-10)
 *
 *   - The `numbers` variable is an array of arrays.
 *   - Use a nested `for` loop to cycle through `numbers`.
 *   - Convert each even number to the string "even"
 *   - Convert each odd number to the string "odd"
 */

var numbers = [
    [243, 12, 23, 12, 45, 45, 78, 66, 223, 3],
    [34, 2, 1, 553, 23, 4, 66, 23, 4, 55],
    [67, 56, 45, 553, 44, 55, 5, 428, 452, 3],
    [12, 31, 55, 445, 79, 44, 674, 224, 4, 21],
    [4, 2, 3, 52, 13, 51, 44, 1, 67, 5],
    [5, 65, 4, 5, 5, 6, 5, 43, 23, 4424],
    [74, 532, 6, 7, 35, 17, 89, 43, 43, 66],
    [53, 6, 89, 10, 23, 52, 111, 44, 109, 80],
    [67, 6, 53, 537, 2, 168, 16, 2, 1, 8],
    [76, 7, 9, 6, 3, 73, 77, 100, 56, 100]
];

// your code goes here
for (var row = 0; row < numbers.length; row++) {
    for (var column = 0; column < numbers[row].length; column++) {
        if (numbers[row][column] %2 === 0) {
            numbers[row][column] = "even";
        } else if (numbers[row][column] %2 !== 0) {
            numbers[row][column] = "odd";
        }
    }
}

console.log(JSON.stringify(numbers));