日期:2014-05-20 浏览次数:20759 次
package csdn.kao331431214.number4; import java.util.Scanner; public class HiLo { /** * @author 小明 */ public static void main(String[] args) { // TODO Auto-generated method stub int x, y, z = 1;//x为随机数 y为输入数 z为是否猜对的监视器 String str = "y";//控制程序总循环 Scanner scan = new Scanner(System.in);//输入数字用 Scanner scan1 = new Scanner(System.in);//输入字符串用 while(str.equalsIgnoreCase("y")){//程序总循环 x = (int)(Math.random() * 100 + 1);//产生随机数字 System.out.println("猜猜看,数字是多少?"); y = scan.nextInt(); if(y > 0 && y < 101){//数字输入正确 while(z != 0){ if(y == x){ System.out.println("恭喜你猜对了!!"); z = 0; }else{//判断大小 if(y > x){ System.out.println("再小点~"); }else{ System.out.println("再大点~"); } System.out.println("猜猜看,数字是多少?"); y = scan.nextInt(); } } }else{//数字输入错误 System.out.println("输入数字错误,必须大于0小于等于100"); System.out.println("程序重新启动中"); System.out.println(); } if(y == x){//控制总循环 System.out.println("继续吗?(Y/N)"); str = scan1.nextLine(); } } } }
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package test; import java.util.Scanner; public class TestReg { public static void main(String[] args) { int a = (int) (Math.random() * 1000); String bString, aString = ""; int j = 0; Scanner input = new Scanner(System.in); do { System.out.println("请输入三位数字"); bString = input.next(); j++; if (j == 3) System.exit(0); } while (!bString.matches("[1-9]{1}[0-9]{2}")); System.out.println("随机数=" + a); bString = a + bString; for (int i = 0; i < 3; i++) { if (bString.charAt(i) == bString.charAt(i + 3)) aString = aString + bString.charAt(i); else aString = aString + "#"; } System.out.println(aString); } }
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package testWeb; import java.io.BufferedReader; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; public class GuessNum { // 生成随机三位数 private static int randomNum() { int result = 0; // 以下任一方法均可产生100<=&&<=999的正整数 // Random r = new Random(); // do { // result = Math.abs(r.nextInt(1000)); // } while (result < 100); do { result = (int) (1000 * Math.random()); } while (result < 100); return result; } // public static boolean haveStar(String[] temp) { boolean result = false; for (int i = 0; i < temp.length; i++) { if (temp[i].equals("*")) result = true; } return result; } /** * @param args */ public static void main(String[] args) { // TODO Auto-generated method stub int a = randomNum(); e);