懶人王的TDD by example (1) -- 挑戰讓我想起了多年前抱著文曲星猜數的時光，逝者如斯夫……

我本人一直認為TDD是個很玄妙的東西，它對我們習慣的功能驅動的編程方式是一種顛覆。我一直想實踐一下，但是沒有機會。希望能夠從懶人王的這個系列里學到想學的東西。

在此先實現一個非TDD的實現，回頭再比較一下與TDD的方式有什么不同。

由于時間倉促，沒有過多的OO。整個代碼只有一個Game類。

namespace GuessGame {class Game{private static readonly int NUMBER_COUNT = 4;private static readonly int GUESS_TIME = 6;private int guessedTime;private int[] numbers;private int[] inputs;private int aCount;private int bCount;public Game(){Init();}public void Play(string input){Input(input);if (!Compare()){Output();aCount = 0;bCount = 0;guessedTime++;}else{Console.Write("猜對了，正確答案為");Output(numbers);Console.WriteLine();Init();}if (guessedTime >= GUESS_TIME){Console.Write("失敗：您已經猜了" + guessedTime + "次");Init();}}private void Init(){aCount = 0;bCount = 0;guessedTime = 0;numbers = new int[NUMBER_COUNT];GenerateDistinctRandomNumbers();Console.WriteLine("請輸入4位數字");}private void GenerateDistinctRandomNumbers(){ Random r = new Random();bool allowZero = true;for (int i = 0; i < NUMBER_COUNT; i++){int n = r.Next(10);if (n == 0 && allowZero){numbers[i] = n;allowZero = false;}else{while (numbers.Contains(n)){n = r.Next(10);}numbers[i] = n;}}}private void Output(){Output(inputs);Console.Write(" ");Console.Write(aCount);Console.Write("A");Console.Write(bCount);Console.Write("B");Console.WriteLine();}private void Output(int[] array){foreach (int i in array)Console.Write(i);}private bool Compare(){for (int i = 0; i < NUMBER_COUNT; i++){if (numbers[i] == inputs[i]){aCount++;}else if (numbers.Contains<int>(inputs[i])){bCount++;}}return aCount == NUMBER_COUNT;}private void Input(string input){if (String.IsNullOrEmpty(input))throw new ArgumentNullException("輸入不正確，重新輸入");if (input.Length != NUMBER_COUNT)throw new ArgumentOutOfRangeException("輸入不正確，重新輸入");bool allowZero = true;inputs = new int[NUMBER_COUNT];for (int i = 0; i < input.Length; i++){int n = 0;bool isInt = int.TryParse(input[i].ToString(), out n);if (isInt){if (n == 0 && allowZero){allowZero = false;}else{if (inputs.Contains<int>(n)){throw new ArgumentException("輸入不正確，重新輸入");}}inputs[i] = n;}elsethrow new ArgumentException("輸入不正確，重新輸入");}}} }

main方法很簡單。

namespace GuessGame {class Program{static void Main(string[] args){Game game = new Game();while (true){string input = Console.ReadLine();try{game.Play(input);}catch (Exception ex){Console.WriteLine(ex.Message);}}}} }

好久不寫代碼，手有點生銹。

好了，請懶人拍磚。

轉載于:https://www.cnblogs.com/kirinboy/archive/2009/07/08/guess-game-without-tdd.html

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