Learn Java with teacher Wang three major features (ii): Case quickhit: Game output string

Case Quickhit: Game output string
Teacher: Wang Shaohua QQ Group No.:483773664Learning Goals

Complete the game output string

I. Description of requirements

Output random string in console

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Second, the Thinking analysis

Generate string

Output string

return string

Three, the difficulty hint

The Player property in the game class, which represents the player, queries the player's level number, and gets the string length of that level according to the level number to the Levelparam class

String lengths can be fixed by a for loop, while random content can be obtained by obtaining random numbers, while different random numbers correspond to different characters to achieve

Iv. Reference Code

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/**     * 输出指定级别规定长度的字符串。     * @return 输出的字符串，用于和用户输入比较     */    public String printStr() {        int strLength = LevelParam.levels[player.getLevelNo() - 1].getStrLength();        StringBuffer buffer = new StringBuffer();        Random random = new Random();        // 1、通过循环生成要输出的字符串        for (int i = 0; i < strLength; i++) {            // 1.1、产生随机数            int rand = random.nextInt(strLength);            // 1.2、根据随机数拼接字符串            switch (rand) {            case 0:                buffer.append(">");                break;            case 1:                buffer.append("<");                break;            case 2:                buffer.append("*");                break;            case 3:                buffer.append("&");                break;            case 4:                buffer.append("%");                break;            case 5:                buffer.append("#");                break;            }        }        // 2、输出字符串        System.out.println(buffer);        // 3、返回字符串用于和玩家输入相比较        return buffer.toString();    }

V. Testing

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public class Test {    public static void main(String[] args) {        Player player = new Player();        player.setLevelNo(2);        Game game = new Game(player);        game.printStr();    }}

From for notes (Wiz)

Learn Java with teacher Wang three major features (ii): Case quickhit: Game output string