/** * 版权所有 2023 涂聚文有限公司 * 许可信息查看: * 描述: *用100元买100只鸡,大公鸡5元一只,母鸡3元1只,小鸡一元3只,问各能买多少只? * 历史版本: JDK 8.01 * 2023-03-12 创建者 geovindu * 2023-03-12 添加 Lambda * 2023-03-12 修改:date * 接口类 * 2023-03-12 修改者:Geovin Du * 生成API帮助文档的指令: *javadoc - -encoding Utf-8 -d apidoc RandomHelper.java * Interface * Record * Annotation * Enum * */ package Common; import java.util.Random; /** * * @author geovindu 凃聚文,塗聚文,Geovin Du * @version 1.0 * * 隨機數生成 * * * */ public class RandomHelper { /** * * */ static Random random=new Random(); static String randomChars = "ABCDFGHJKMNPQRTVWXYabcdefghjkmnpqrtvwxy23456789!#@%$&"; /** * * @param max 随大值 * @param min 最小值 * @return * */ public static int RandomInt(int min, int max) { int num=random.nextInt(max-min+1)+min; return num; } /** *指定字符串自定義長度 * @param lengh 自定長度 * @return 返回需要的字符串 * */ public static String RandomString(int lengh) { String getCode=""; StringBuilder stringBuilder=new StringBuilder(); for (int i = 0; i <lengh ; i++) { int num=random.nextInt(randomChars.length()); stringBuilder.append(randomChars.charAt(num)); } getCode=stringBuilder.toString(); return getCode; } /** * * @param lengh 自定義抽取几個 * * */ public static String RandomArryString(int lengh) { String getCode=""; String [] arryStr=new String[] {"Broccoli", "SiboDu", "Kiwi", "Kale", "Toma","GeovinDu","塗聚文"}; StringBuilder stringBuilder=new StringBuilder(); for (int i = 0; i <lengh ; i++) { int num=random.nextInt(arryStr.length); stringBuilder.append(arryStr[num]); } getCode=stringBuilder.toString(); return getCode; } /** * 自定義字符串和長度 * @param lengh 自定長度 * @param strMore 自定字符串 * @return 返回需要的字符串 * * */ public static String RandomString(int lengh,String strMore) { String getCode=""; StringBuilder stringBuilder=new StringBuilder(); for (int i = 0; i <lengh ; i++) { int num=random.nextInt(strMore.length()); stringBuilder.append(strMore.charAt(num)); } getCode=stringBuilder.toString(); return getCode; } /** * * @param lengh 自定義抽取几個 * @param arryStr * @return * */ public static String RandomArryString(int lengh,String [] arryStr) { String getCode=""; //String [] arryStr=new String[] {"Broccoli", "SiboDu", "Kiwi", "Kale", "Toma","GeovinDu","塗聚文"}; StringBuilder stringBuilder=new StringBuilder(); for (int i = 0; i <lengh ; i++) { int num=random.nextInt(arryStr.length); stringBuilder.append(arryStr[num]); } getCode=stringBuilder.toString(); return getCode; } } /** * 版权所有 2023 涂聚文有限公司 * 许可信息查看: * 描述: *用100元买100只鸡,大公鸡5元一只,母鸡3元1只,小鸡一元3只,问各能买多少只? * 历史版本: JDK 8.01 * 2023-03-12 创建者 geovindu * 2023-03-12 添加 Lambda * 2023-03-12 修改:date * 接口类 * 2023-03-12 修改者:Geovin Du * 生成API帮助文档的指令: *javadoc - -encoding Utf-8 -d apidoc RandomDal.java * Interface * Record * Annotation * Enum * */ package Dal; import Common.RandomHelper; /** * * * * */ public class RandomDal { /** * * @return * */ public String getRandomString() { //生成字符串位數隨機 int lengh=RandomHelper.RandomInt(6,10); //六位至十位之閒 return RandomHelper.RandomString(lengh); } /** * * @param lengh * @return * */ public String getRandomString(int lengh) { return RandomHelper.RandomString(lengh); } /** * * @return * */ public int getRandomInt() { return RandomHelper.RandomInt(0,10); } /** * * @param min * @param max * @return * */ public int getRandomInt(int min,int max) { return RandomHelper.RandomInt(min,max); } /** * * @return * */ public String getRandomArryStr() { return RandomHelper.RandomArryString(1); } /** * * @param count * @return * * */ public String getRandomArryStr(int count) { return RandomHelper.RandomArryString(count); } /** * * @param count * @param arry * @return * * */ public String getRandomArryStr(int count,String [] arry) { return RandomHelper.RandomArryString(count,arry); } } /** * 版权所有 2023 涂聚文有限公司 * 许可信息查看: * 描述: *用100元买100只鸡,大公鸡5元一只,母鸡3元1只,小鸡一元3只,问各能买多少只? * 历史版本: JDK 8.01 * 2023-03-12 创建者 geovindu * 2023-03-12 添加 Lambda * 2023-03-12 修改:date * 接口类 * 2023-03-12 修改者:Geovin Du * 生成API帮助文档的指令: *javadoc - -encoding Utf-8 -d apidoc RandomBll.java * Interface * Record * Annotation * Enum * */ package Bll; import Dal.RandomDal; /** * * * * */ public class RandomBll { /** * * * */ RandomDal randomDal=new RandomDal(); /** * * @return * */ public String getRandomString() { String str=randomDal.getRandomString(); return str; } /** * * @return ; * */ public int getRandomInt() { int num=randomDal.getRandomInt(); return num; } /** * * @param min * @param max * @return * */ public int getRandomInt(int min,int max) { int num=randomDal.getRandomInt(min,max); return num; } /** * * * * */ public String getRandomArryStr() { return randomDal.getRandomArryStr(); } }
调用:
//隨機數 RandomBll randomBll=new RandomBll(); for (int i = 0; i <10 ; i++) { System.out.println("int:"+randomBll.getRandomInt()); System.out.println("int(6-10):"+randomBll.getRandomInt(6,10)); System.out.println("string:"+randomBll.getRandomString()); System.out.println("抽獎:"+randomBll.getRandomArryStr()); }
输出:
int:9 int(6-10):9 string:j5Ntq!c 抽獎:SiboDu int:0 int(6-10):6 string:hD3Wg4FVBQ 抽獎:Broccoli int:8 int(6-10):6 string:m78378w9c 抽獎:Broccoli int:7 int(6-10):8 string:RRQKTk6T 抽獎:GeovinDu int:5 int(6-10):7 string:tR5Q6qdBvj 抽獎:Kiwi int:10 int(6-10):10 string:t8KtNer 抽獎:Kiwi int:3 int(6-10):10 string:tWA8Tgqc 抽獎:Broccoli int:5 int(6-10):10 string:g4q8e#xgyN 抽獎:Toma int:10 int(6-10):6 string:!NhddKb! 抽獎:Toma int:1 int(6-10):7 string:c8WQvN97NX 抽獎:Toma [1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31, 33, 35, 37, 39, 41, 43, 45, 47, 49, 51, 53, 55, 57, 59, 61, 63, 65, 67, 69, 71, 73, 75, 77, 79, 81, 83, 85, 87, 89, 91, 93, 95, 97, 99] 1--100以内的奇数的和是:2500 [5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95, 100] 1--100以内除五的数的和是:1050 输入10个整数(按回车输入另一个数):
标签:10,Java,string,int,Random,100,抽獎 From: https://www.cnblogs.com/geovindu/p/17317921.html