JAVA 随机数 Random,求好手

JAVA 随机数 Random,求好手 JAVA éš?机æ•? Random,æ?‚é??手 * éš?机äº?生7ä?ªéš?机æ•?ï?Œå‰?å…?ä?ªæ•?å??的范å›?æ??ä??1è‡?33ï?Œç??7ä?ªæ•?的范å›?æ??ä??1è‡?22ã?‚ * * å??å?ªæœ‰ä??ä?ªè??æ?‚ * å‰?å…?ä?ªçš„æ•?å??æ??1è‡?33ä?‹é??ä??é‡?å??çš„æ•?ã?‚ import java.util.Random; public class SSQiu { /** * @param args * éš?机äº?生7ä?ªéš?机æ•?ï?Œå‰?å…?ä?ªæ•?å??的范å›?æ??ä??1è‡?33ï? Œç??7ä?ªæ•?的范å›?æ??ä??1è‡?22ã?‚ * * å??å?ªæœ‰ä??ä?ªè??æ?‚ * å‰?å…?ä?ªçš„æ•?å??æ??1è‡?33ä?‹é??ä??é‡?å??çš„æ•?ã?‚ * * è??ä?ªç?‹åº?æ„Ÿè?‰å†?çš„å?ˆå??æ?‚ï?Œæœ‰æ??有ç??å?•ä??ç‚?çš„å†?æ?•ï?Œæ?‚é??手 * */ public static final int SCOPE_1_6 = 33; //The first sixth number's scope is from 1 to 33,including 1 and 33 ,(1 = X = 33) public static final int SCOPE_7 = 22; // The first seventh number's scope is from 1 to 22,including 1 and 22 ,(1 = X = 22) public static final int NUM = 7; // The ShuangSeQiu including 7 numbers private static boolean alreadyExisted(int[] result, int key ,boolean firstTime ,int index) { boolean flag = false; if(!firstTime){ for (int i = 0; i index ; i++) { if (result[i] == key) { flag = true; break; } } } return flag; } public static void main(String[] args) { // TODO Auto-generated method stub Random rd = new Random(); int[] result = new int[NUM]; for (int i = 0; i result.length; i++) { result[i] = -1; } boolean[] flag = new boolean[SCOPE_1_6 + 1]; for (int i = 1; i = SCOPE_1_6; i++) { flag[i] = true; } int key = 1; int index = 0; int count = 0; boolean firstTime = true; while (true) { key = Math.abs(rd.nextInt() % (SCOPE_1_6 + 1)); while (key 1) { key = Math.abs(rd.nextInt() % (SCOPE_1_6 + 1)); } result[index] = key; if (!alreadyExisted(result, key,firstTime,index)) { index++; count++; } if(index = NUM -1 ){ break; } firstTime = false; } key = Math.abs(rd.nextInt() % (SCOPE_7 + 1)); while (key 1) { key = Math.abs(rd.nextInt() % (SCOPE_7 + 1)); } result[NUM - 1] = key; int sum = 0; System.out.print( The + NUM + random's number is : ); for (int i = 0; i result.length; i++) { sum = sum + result[i]; System.out.print( [ +result[i] + ] ); } System.out.println( ); System.out.println( sum[ + result.length + ] = + sum ); } } ------è??å†?æ??æ?ˆ------------------------------------------------ -------- ä? å?‚è?ƒä?‹ï?Œç”?javaæ??ä?›çš„éš?机æ•?生æˆ? Java code import java.util.List; import java.util.ArrayList; public class RandomNumberFactory { public static final int NUM = 7; public List Integer getRandowNumbers(){ List Integer list=new ArrayList Integer (); for(int j=0;list.size()!=6;j++){ int i=1+(int)(Math.random()*33); if(!list.contains(i) list.size()!=6){ list.add(i); } } for(int i=0;list.size()!=7;i++){ int j=1+(int)(Math.random()*22); if(!list.contains(j) list.size()!=7){ list.add(j); } } // i=1+(int)(Math.random()*22); return list; } public static void main(String[] args) { RandomNumberFactory factory=new RandomNumberFactory(); for(int i:factory.getRandowNumbers()){ System.out.println(i); } } } ------è??å†?æ??æ?ˆ-------------------------------------------------------- å?ŸåŠ?Collectionsçš„shuffle()å†?了ä??ä?ªï?Œä?›å?‚è?ƒã?‚ Java code