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Code tests

# Finally, I can present Python code on my website.

def sum(a, b):
    return a + b

def sub(a, b):
    return a - b

def mul(a, b):
    return a * b

def div(a, b):
    return a / b

a = float(input('First: '))
b = float(input('Second: '))
op = input('Operation (sum/sub/mul/div): ')

if op == 'sum':
    print(f'a + b = {sum(a, b)}')
elif op == 'sub':
    print(f'a - b = {sub(a, b)}')
elif op == 'mul':
    print(f'a * b = {mul(a, b)}')
elif op == 'div':
    print(f'a / b = {div(a, b)}')
else:
    print('Invalid Operation!')

/* How about C++? */

private void index(){
MessageBox.Show("hello world");
}

// Or HTML and CSS (with a few extra long lines of code)?

<!doctype html>
<html lang="en">
<head>
    <meta charset="utf-8">
    <title>Battleship</title>
    <style>
    body {
        background-color: black;
    }
    div#board {
        position: relative;
        width: 1024px;
        height: 863px;
        margin: auto;
        background: url("board.jpg") no-repeat;
    }
    div#messageArea {
        position: absolute;
        top: 0px;
        left: 0px;
        color: rgb(83, 175, 19);
    }
    table {
        position: absolute;
        left: 173px;
        top: 98px;
        border-spacing: 0px;
    }
    td {
        width: 94px;
        height: 94px;
    }
    form {
        position: absolute;
        bottom: 0px;
        right: 0px;
        padding: 15px;
        background-color: rgb(83, 175, 19);
    }
    form input {
        background-color: rgb(152, 207, 113);
        border-color: rgb(83, 175, 19);
        font-size: 1em;
    } 
    .hit {
        background: url("ship.png") no-repeat center center;
    }
    .miss {
        background: url("miss.png") no-repeat center center;
    }
    </style>
</head>
</body>
    <div id="board">
    <div id="messageArea"></div>
    <table>
        <tr>
        <td id="00"></td><td id="01"></td><td id="02"></td><td id="03"></td><td id="04"></td><td id="05"></td><td id="06"></td>
        </tr>
        <tr>
        <td id="10"></td><td id="11"></td><td id="12"></td><td id="13"></td><td id="14"></td><td id="15"></td><td id="16"></td>
        </tr>
        <tr>
        <td id="20"></td><td id="21"></td><td id="22"></td><td id="23"></td><td id="24"></td><td id="25"></td><td id="26"></td>
        </tr>
        <tr>
        <td id="30"></td><td id="31"></td><td id="32"></td><td id="33"></td><td id="34"></td><td id="35"></td><td id="36"></td>
        </tr>
        <tr>
        <td id="40"></td><td id="41"></td><td id="42"></td><td id="43"></td><td id="44"></td><td id="45"></td><td id="46"></td>
        </tr>
        <tr>
        <td id="50"></td><td id="51"></td><td id="52"></td><td id="53"></td><td id="54"></td><td id="55"></td><td id="56"></td>
        </tr>
        <tr>
        <td id="60"></td><td id="61"></td><td id="62"></td><td id="63"></td><td id="64"></td><td id="65"></td><td id="66"></td>
        </tr>
    </table>
    <form>
        <input type="text" id="guessInput" placeholder="A0">
    <input type="button" id="fireButton" value="Fire!">
    </form>
    </div>
    <script src="battleship2.js"></script>
</body>
</html>

// Or JavaScript?

var view = {
displayMessage: function(msg) {
    var messageArea = document.getElementById("messageArea");
    messageArea.innerHTML = msg;
},
displayHit: function(location) {
    var cell = document.getElementById(location);
    cell.setAttribute("class", "hit");
},
displayMiss: function(location) {
    var cell = document.getElementById(location);
    cell.setAttribute("class", "miss");
}
};

var model = {
boardSize: 7,
numShips: 3,
shipLength: 3,
shipsSunk: 0,
ships: [{ locations: [0, 0, 0], hits: ["", "", ""] },
        { locations: [0, 0, 0], hits: ["", "", ""] },
        { locations: [0, 0, 0], hits: ["", "", ""] }],
fire: function(guess) {
    for (var i=0; i<this.numShips; i++) {
    var ship = this.ships[i];
    var index = ship.locations.indexOf(guess);
    if (index >= 0) {
        ship.hits[index] = "hit";
        view.displayHit(guess);
        view.displayMessage("HIT!");
        if (this.isSunk(ship)) {
        view.displayMessage("You sank my battleship!");
        this.shipsSunk++;
        }
        return true;
    }
    }
    view.displayMiss(guess);
    view.displayMessage("You missed.");
    return false;
},
isSunk: function(ship) {
    for (var i = 0; i < this.shipLength; i++) {
    if (ship.hits[i] != "hit") {
        return false;
        }
    }
    return true;
},
generateShipLocations: function() {
    var locations;
    for (var i = 0; i < this.numShips; i++) {
        do {
        locations = this.generateShip();
        } while (this.collision(locations));
        this.ships[i].locations = locations;
    }
},
generateShip: function() {
    var direction = Math.floor(Math.random() * 2);
    var row;
    var col;
    if (direction === 1) {
    row = Math.floor(Math.random() * this.boardSize);
    col = Math.floor(Math.random() * (this.boardSize - (this.shipLength + 1)));
    } else {
    row = Math.floor(Math.random() * (this.boardSize - (this.shipLength +1)));
    col = Math.floor(Math.random() * this.boardSize);
    }
    var newShipLocations = [];
    for (var i = 0; i < this.shipLength; i++) {
    if (direction === 1) {
        newShipLocations.push(row + "" + (col + i));
    } else {
        newShipLocations.push((row+i) + "" + col);
    }
    }
    return newShipLocations;
},
collision: function(locations) {
    for (var i = 0; i < this.numShips; i++) {
    var ship = this.ships[i];
    for (var j = 0; j < locations.length; j++) {
        if (ship.locations.indexOf(locations[j]) >= 0) {
        return true;
        }
    }
    }
    return false;
}
};

var controller = {
guesses: 0,
processGuess: function(guess) {
    var location = parseGuess(guess);
    if (location) {
    this.guesses++;
    var hit = model.fire(location);
    if (hit && model.shipsSunk === model.numShips) {
        view.displayMessage("You sank all my battleships, in " + this.guesses + " guesses");
    }
    }
}

}

function parseGuess(guess) {
var alphabet = ["A", "B", "C", "D", "E", "F", "G"];
if (guess == null || guess.length !== 2) {
    alert("Oops, please enter a letter and a number on the board.");
} else {
    var firstChar = guess.charAt(0);
    var row = alphabet.indexOf(firstChar);
    var column = guess.charAt(1);
    if (isNaN(row) || isNaN(column)) {
    alert("Oops, that isn't on the board.");
    } else if (row < 0 || row >= model.boardSize || column < 0 || column >= model.boardSize) {
    alert("Oops, that's off the board!");
    } else {
    return row + column;
    }
    return null;
}
}

function init() {
var fireButton = document.getElementById("fireButton");
fireButton.onclick = handleFireButton;
var guessInput = document.getElementById("guessInput");
guessInput.onkeypress = handleKeyPress;
model.generateShipLocations();
}

window.onload = init;

function handleFireButton() {
var guessInput = document.getElementById("guessInput");
var guess = guessInput.value;
controller.processGuess(guess);
guessInput.value = "";
}

function handleKeyPress(e) {
var fireButton = document.getElementById("fireButton");
if (e.keyCode === 13) {
    fireButton.click();
    return false;
}
}



/* model.fire("53");

model.fire("06");
model.fire("16");
model.fire("26");

model.fire("34");
model.fire("24");
model.fire("44");

model.fire("12");
model.fire("11");
model.fire("10"); */

/* console.log(parseGuess("A0"));
console.log(parseGuess("B6"));
console.log(parseGuess("G3"));
console.log(parseGuess("H0"));
console.log(parseGuess("A7")); */

/* controller.processGuess("A0");

controller.processGuess("A6");
controller.processGuess("B6");
controller.processGuess("C6");

controller.processGuess("C4");
controller.processGuess("D4");
controller.processGuess("E4");

controller.processGuess("B0");
controller.processGuess("B1");
controller.processGuess("B2"); */

//view.displayMiss("00");
//view.displayHit("34");
//view.displayMiss("55");
//view.displayHit("12");
//view.displayMiss("25");
//view.displayHit("26");
//view.displayMessage("Tap tap, is this thing on?");