java数字彩票游戏代码
严阵以待-家风家训手抄报
package
import
**
* NumberLotteryGame
* 一个简单的数字彩票游戏类
* @author LuisZhang
* 参考了core java
8th中的例3-7的设计思想
*
public class
NumberLotteryGame {
private int
gamesNumber; 生成游戏的数量，为以后多线程扩展做考虑
private int numbersLength; 数字序列的总长度
private int winningNumbersLength; 中奖的数字序列的长度
**
* Constructor with
three parameters
* 初始化3个参数的构造方法
* @param gamesNumber
* @param
numbersLength
* @param
winningNumbersLength
*
public
NumberLotteryGame(int gamesNumber, int
numbersLength, int
winningNumbersLength) {
umber = gamesNumber;
sLength = numbersLength;
gNumbersLength = winningNumbersLength;
}
**
* Generate a number
Array
* 生成一个产生中奖序列所需的数字序列
*
@param length 数字序列的长度
* @return
numbers 产生的数字序列
*
public static
int[] generateNumberArray(int length) {
int[] numbers = new int[length];
for (int i = 0; i < i++) {
numbers[i] = i + 1;
}
return numbers;
}
**
* Generate a winning number
array
* 根据生成的数字序列，产生不重复的中奖数字序列
*
@param length 中奖数字序列的长度
* @return result
中奖数字数组
*
public int[]
generateWinningNumberArray(int length) {
int[] numbers =
teNumberArray(numbersLength);
int[] result = new
int[length];
int n =
numbersLength;
该for循环为产生不重复的中奖序列的核心代码
for(int i = 0;
i < i++) {
int r = (int) (() *
n); 随机产生一个从0——(n-1)
的数字,()
随机产生一个[0, 1)范
围的double型数值,
result[i] = numbers[r];
将该随机数字作为数组的
下标，
将该下标对应的值赋给
result[i]
numbers[r] = numbers[n - 1];
将numbers数组的
numbers[n-1]的值，赋给刚已赋
值过的numbers[r]。
n--;
将n-1,从而下一次循环产生的随机的原数组下标的范围
从0——（n-1）-1,
保证了上一步中，已经赋值给数组中其他数的
numbers[n-1]，不会在下次循环中给取
得，从而保证了产生的中奖数组result为不重复的。
}
return
result;
}
**
* Show winning NumberArray
* 显示中将数组
*
public void showWinningNumberArray() {
int[] winningNumbers =
teWinningNumberArray(winningNumbersLength);
(winningNumbers);
for(int r : winningNumbers) {
(r
+
}
n();
}
**
*
@return the gamesNumber
*
public
int getGamesNumber() {
return
gamesNumber;
}
**
* @param gamesNumber the gamesNumber to set
*
public void setGamesNumber(int
gamesNumber) {
umber = gamesNumber;
}
**
* @return the
numbersLength
*
public int
getNumbersLength() {
return
numbersLength;
}
**
* @param numbersLength the numbersLength to set
*
public void
setNumbersLength(int numbersLength) {
sLength = numbersLength;
}
**
* @return the winningNumbersLength
*
public int
getWinningNumbersLength() {
return
winningNumbersLength;
}
**
* @param winningNumbersLength
the winningNumbersLength to set
*
public void setWinningNumbersLength(int
winningNumbersLength) {
gNumbersLength = winningNumbersLength;
}
**
* Main method
* 用于测试该类的main方法
* @param args
*
public static void main(String[] args) {
int i = 20; int i = nt(args[0]);
for(int j = 0; j < i; j++) {
NumberLotteryGame game1 = new NumberLotteryGame(1,
15, 7);
nningNumberArray();
}
}
}