雙色球 Java__Java

package Array;import java.util.Arrays;import java.util.Random;public class ArrayDemo04 {/** * 雙色球 籃球 1-16 取一個 紅球 1-33 取六個 *  * @param args */public static void main(String[] args) {// TODO Auto-generated method stubgetRed();getBlue();}public static int getRed() {Random r = new Random();//產生紅球System.out.print("紅球：");int[] red = new int[6];//產生一個1-33的數組int[] arr = new int[33];//產生1-33的紅球 數組元素for (int i=0;i<33;i++){arr[i]  = i+1;//System.out.print(arr[i]);}int i=0;while(i<6){//產生一個隨機的下標int index=r.nextInt(33);//根據下標去取數組對應的值int num = arr[index];if(num!=0){red[i] = num;//紅球個數+1i++;//將對應下標的元素標識為0，被使用過arr[index]=0;}}//對隨機產生的紅球進行排序for (int x=0; x<red.length-1;x++){for (int y=x+1;y<red.length;y++){if (red[x] > red[y]){int temp = red[x];red[x] = red[y];red[y] = temp;}}}//用for迴圈輸出六個紅球for (int j=0;j<red.length;j++){System.out.print(red[j] + " ");}//System.out.print(Arrays.toString(red));//用數組將它轉換成字串，工具類return 0;}public static int getBlue(){Random r = new Random();// 產生籃球int blue = r.nextInt(16) + 1;// 包前不包尾System.out.println("\n"+"籃球：" + blue);return blue;}}