【java】中国大学mook翁恺老师java初级课通关啦

题目详情请自行查看中国大学mook对应课程，下面附上源码：

import java.util.*;//引入库函数

public class 自动售票机 {
	public static void main(String[] args) {
		do {
			Menu();// 程序功能目录
			Scanner in = new Scanner(System.in);
			int Type = in.nextInt();
			if (Type == -1) {
				System.out.println("退出成功！！！");
				break;
			}
			switch (Type) {
			case 1: {
				Buy();
				break;
			}
			case 2: {
				Judge();
				break;
			}
			case 3: {
				Arge();
				break;
			}
			case 4: {
				Guess();
				break;
			}
			case 5: {
				guess();
				break;
			}
			case 6: {
				digit();
				break;
			}
			case 7: {
				IsPrime();
				break;
			}
			case 8: {
				OutPutPrime();
				break;
			}
			case 9: {
				Sum();
				break;
			}
			case 10: {
				gcd();
				break;
			}
			case 11: {
				Avag();
				break;
			}
			case 12: {
				TouPiao();
				break;
			}
			case 13: {
				game();
				break;
			}
			case 14: {
				Dxs();
				break;
			}
			case 15: {
				Word();
				break;
			}
			case 16: {
				devide();
				break;
			}
			case 17: {
				wanshu();
				break;
			}
			case 18: {
				Tem();
				break;
			}
			case 19: {
				Time();
				break;
			}
			case 20: {
				Img();
				break;
			}
			case 21: {
				numberOf();
				break;
			}
			case 22: {
				Cheracter();
				break;
			}
			default: {
				System.out.println("输入错误！");
				break;
			}
			}
		} while (true);
	}

	// 程序功能目录函数
	static void Menu() {
		System.out.println("*********************************");
		System.out.println("*******    程序功能目录      ***********");
		System.out.println("           1.自动售票机                       ");
		System.out.println("           2.计算成绩                           ");
		System.out.println("           3.算平均数                           ");
		System.out.println("           4.我来输入你来猜                ");
		System.out.println("           5.你来输入我来猜                ");
		System.out.println("           6.整数分解倒序输出            ");
		System.out.println("           7.判断素数                           ");
		System.out.println("           8.N以内的素数                     ");
		System.out.println("           9.从1加到1/n的和               ");
		System.out.println("           10.最大公约数                     ");
		System.out.println("           11.输出比平均数大的数      ");
		System.out.println("           12.投票统计                         ");
		System.out.println("           13.读数字                         ");
		System.out.println("           14.多项式求和                     ");
		System.out.println("           15.单词长度                         ");
		System.out.println("           16.分解质因数                     ");
		System.out.println("           17.完数                                ");
		System.out.println("           18.温度转换                        ");
		System.out.println("           19.时间换算                        ");
		System.out.println("           20.信号报告                        ");
		System.out.println("           21.奇偶个数                        ");
		System.out.println("           22.数字特征值                    ");
		System.out.println("*********************************");
		System.out.println("请输入你想实现的功能：（输入-1退出程序！）");
	}

	// 自动售票机函数
	static int Buy() {
		Scanner in = new Scanner(System.in);
		int balance = 0;
		while (true) {
			System.out.println("请投币：(输入-1退出)");
			int amount = in.nextInt();
			balance += amount;
			if (amount >= 10) {
				System.out.println("*********************");
				System.out.println("    Java城际铁路专线    ");
				System.out.println("      无指定座位票        ");
				System.out.println("       票价：10元          ");
				System.out.println("*********************");
				System.out.println("找零：" + (balance - 10) + "元！");
				balance = 0;
			} else if (amount == -1) {
				return 0;
			} else {
				System.out.println("余额不足！");
			}
		}
	}

	// 判断成绩函数
	static void Judge() {
		Scanner in = new Scanner(System.in);
		System.out.println("请输入你的成绩：");
		int mark = in.nextInt();
		switch (mark / 10) {
		case 1:
		case 2:
		case 3:
		case 4:
		case 5:
			System.out.println("不及格！");
			break;
		case 6:
			System.out.println("恭喜及格！");
			break;
		case 7:
			System.out.println("七十分，还有上升空间！");
			break;
		case 8:
			System.out.println("八十分，很优秀了你！");
			break;
		case 9:
			System.out.println("九十分！离满分只差一步！");
			break;
		case 10:
			System.out.println("恭喜满分！无敌！");
			break;
		default:
			System.out.println("百分制哦！");
			break;
		}
	}

	// 求平均数函数
	static void Arge() {
		Scanner in = new Scanner(System.in);
		System.out.println("请输入你要输入的数字：（输入-1表示结束）");
		int number = 0;
		int sum = 0;
		int count = 0;
		do {
			number = in.nextInt();
			if (number != -1) {
				sum += number;
				count++;
			}
		} while (number != -1);
		System.out.println("这" + count + "个数的平均数是：" + (double) (sum / count));
	}

	// 我来输入你来猜
	static void Guess() {
		Scanner in = new Scanner(System.in);
		int number = (int) Math.random() * 100 + 1; // random函数随机产生一个【0,1）的数---->【0,100）----->【1,100）
		int a = 0, count = 0;
		System.out.println("来吧！小老弟，猜个数：");
		do {
			a = in.nextInt();
			count++;
			if (a < number) {
				System.out.println("猜小了，兄弟！");
			} else if (a > number) {
				System.out.println("猜大了，兄弟！");
			} else {
				if (count == 1)
					System.out.println("唉呀妈呀，一下就被你猜中了！兄弟你可以去买彩票了，别忘了奖金分我点儿呦");
				else
					System.out.println("老弟，你猜了" + count + "次！终于猜对了！恭喜恭喜！");
				break;
			}
		} while (true);
	}

	// 你来输入我来猜
	static void guess() {
		Scanner in = new Scanner(System.in);
		System.out.println("来吧，兄弟，我现在闭上眼睛，你输入一个数，(0到100)，我保证在8次以内就猜出来！");
		int number = in.nextInt();
		int sum = 0, sum1 = 100, a, t = 0;
		while (true) {
			a = (sum + sum1) / 2;
			if (a == number) {
				System.out.println("你输入的数是" + a + "!,哈哈，厉害不厉害？猜对了吧！！！");
				break;
			}
			System.out.println("兄弟你刚刚输入的是：" + a + "?");
			System.out.println("输入1表示猜小了，输入2表示猜大了");
			t = in.nextInt();
			if (t == 1)
				sum = a;
			else
				sum1 = a;
		}
	}

	// 整数分解倒序输出
	static void digit() {
		Scanner in = new Scanner(System.in);
		System.out.println("请输入一个整数：");
		int number = in.nextInt();
		System.out.print("倒序输出的结果：");
		do {
			if (number > 9) {
				int a = number % 10;
				if (a != 0)
					System.out.print(a);
				number /= 10;
			} else {
				System.out.print(number);
				break;
			}
		} while (number != 0);
		System.out.println();
	}

	static void IsPrime() {
		Scanner in = new Scanner(System.in);
		System.out.println("请输入一个数：");
		int number = in.nextInt();
		int flag = 1;
		for (int i = 2; i < number; i++) {
			if (number == 2) {
				break;
			}
			if (number % i == 0) {
				flag = 0;
				break;
			}
		}
		if (flag == 1) {
			System.out.println(number + "是素数");
		} else {
			System.out.println(number + "不是素数");
		}
	}

	static void OutPutPrime() {
		Scanner in = new Scanner(System.in);
		System.out.println("请输入一个数：");
		int number = in.nextInt();
		System.out.print(number + "以内的素数有：  ");
		int flag = 1;
		for (int a = 2; a < number; a++) {
			for (int i = 2; i < a; i++) {
				if (a == 2) {
					break;
				}
				if (a % i == 0) {
					flag = 0;
					break;
				}
			}
			if (flag == 1) {
				System.out.print(a + "  ");
			}
			flag = 1;
		}
		System.out.println();
	}

	static void Sum() {
		Scanner in = new Scanner(System.in);
		System.out.println("请输入一个数：");
		int number = in.nextInt();
		double sum = 0.0;
		System.out.println("从1加到1/" + number + "的和是：");
		for (int i = 1; i <= number; i++)
			sum += 1.0 / i;
		System.out.printf("%.2f", sum);
	}

	static void gcd() {
		Scanner in = new Scanner(System.in);
		System.out.println("请输入2个数：");
		int number1 = in.nextInt(), number2 = in.nextInt();
		System.out.print(number1 + "和" + number2 + "的最大公约数是：");
		int c = 0;
		while (number2 != 0) {
			c = number1 % number2;
			number1 = number2;
			number2 = c;
		}
		System.out.print(number1);
		System.out.println();
	}

	static void Avag() {
		Scanner in = new Scanner(System.in);
		System.out.println("请输入一些数字：");
		int[] a = new int[100];
		int count = 0;
		int x, i = 0;
		int sum = 0;
		double avg = 0.0;
		x = in.nextInt();
		while (x != -1) {
			sum += x;
			a[i] = x;
			i++;
			count++;
			x = in.nextInt();
		}
		if (count != 0) {
			avg = sum / count;
			System.out.print("它们的平均数是:");
			System.out.printf("%.2f", avg);
			System.out.print("其中比平均数大的有：   ");
			for (int j = 0; j < a.length; j++) {
				if (a[j] > avg)
					System.out.print(a[j] + "   ");
			}
			System.out.println();
		}
	}

	static void TouPiao() {
		Scanner in = new Scanner(System.in);
		System.out.println("现有0-9号中国好声音选手，请为您喜欢的选手投票吧！输入若干次0到9之间的数x：(输入-1表示退出）");
		int[] a = new int[10];
		int t = in.nextInt();
		int Max, j = 0;
		while (t != -1) {
			if (t >= 0 && t <= 9)
				a[t]++;
			t = in.nextInt();
		}
		Max = a[0];
		j = 0;
		for (int i = 0; i < a.length; i++) {
			if (a[i] > a[0]) {
				Max = a[i];
				j = i;
			}
			System.out.println("恭喜" + i + "号选手获得：" + a[i] + "票！");
		}
		System.out.println("恭喜" + j + "号选手获得：" + Max + "票！赢得本季度的总冠军！！！");
	}

	static void game() {
		Scanner in = new Scanner(System.in);
		String[] b = { "ling", "yi", "er", "san", "si", "wu", "liu", "qi", "ba", "jiu" };
		System.out.println("请输入一个数字：");
		int number = in.nextInt();
		int[] num = new int[100];
		int t = Math.abs(number);
		int cnt = 0, cnt2 = 0;
		if (number > 0) {
			for (int i = 0; t != 0; i++) {
				t /= 10;
				cnt++;
			}
			cnt2 = cnt;
			if (number >= 0) {
				do {
					if (number > 9) {
						num[cnt] = number % 10;
						number /= 10;
						cnt--;
					} else {
						num[cnt] = number;
						break;
					}
				} while (number != 0);
				for (int k = 1; k <= cnt2; k++) {
					for (int j = 0; j < 10; j++) {
						if (num[k] == j && k != cnt2) {
							System.out.print(b[j] + " ");
							break;
						} else if (num[k] == j && k == cnt2) {
							System.out.print(b[j]);
							break;
						}
					}
				}
			}
		} else if (number < 0) {
			System.out.print("fu ");
			number = Math.abs(number);
			if (number > 0) {
				for (int i = 0; t != 0; i++) {
					t /= 10;
					cnt++;
				}
				cnt2 = cnt;
				if (number >= 0) {
					do {
						if (number > 9) {
							num[cnt] = number % 10;
							number /= 10;
							cnt--;
						} else {
							num[cnt] = number;
							break;
						}
					} while (number != 0);
					for (int k = 1; k <= cnt2; k++) {
						for (int j = 0; j < 10; j++) {
							if (num[k] == j && k != cnt2) {
								System.out.print(b[j] + " ");
								break;
							} else if (num[k] == j && k == cnt2) {
								System.out.print(b[j]);
								break;
							}
						}
					}
				}
			}
		} else {
			System.out.println("ling");
		}
		System.out.println();
	}

	static void Dxs() {
		Scanner in = new Scanner(System.in);

		int[] Poly = new int[101];

		int Pow, Coef;

		boolean bCoef = false;// 判断是否为第一次输出
		System.out.println("请输入两个多项式：");
		System.out.println("输入格式:\r\n" + "\r\n" + "\r\n" + "总共要输入两个多项式，每个多项式的输入格式如下：\r\n" + "\r\n"
				+ "每行输入两个数字，第一个表示幂次，第二个表示该幂次的系数，所有的系数都是整数。第一行一定是最高幂，最后一行一定是0次幂。\r\n" + "\r\n" + "");
		for (int i = 0; i < 2; i++) {
			do {
				Pow = in.nextInt();

				Coef = in.nextInt();

				Poly[Pow] += Coef;

			} while (Pow != 0);

		}
//输出
		for (int i = Poly.length - 1; i >= 0; i--) {

			if (Poly[i] != 0) {

				if (bCoef && Poly[i] > 0) {

					System.out.print("+");
				}

				if (Poly[i] != 1) {// 系数不为1时，即输出系数

					System.out.print(Poly[i]);

					if (i > 0) {

						System.out.print("x");

						if (i != 1) {// 输出幂次方

							System.out.print(i);

						}

					}

				} else {// 系数为1时

					System.out.print("x");

					if (i != 1) {// 输出幂次方

						System.out.print(i);

					}

				}

				bCoef = true;

			}

		}
//特殊情况，输出为0
		if (!bCoef) {

			System.out.print(0);

		}

		in.close();

	}

	static void Word() {

		// TODO Auto-generated method stub
		Scanner in = new Scanner(System.in);
		System.out.println("请输入一句话：");
		String a = in.nextLine();
		char[] b = a.toCharArray();
		int[] c = new int[10000];
		int j = 0;
		for (int k = 0; k < b.length; k++) {
			if (b[k] != 32 && b[k] != 46) {
				c[j]++;
			} else if (b[k] != 46) {
				j++;
			}
		}
		for (int k = 0; k <= j; k++) {
			if (k != j && c[k] != 0)
				System.out.print(c[k] + " ");
			else if (c[k] != 0)
				System.out.println(c[k]);
		}
	}

	static void devide() {
		Scanner in = new Scanner(System.in);
		System.out.println("请输入一个数：");
		int number = in.nextInt();
		System.out.print(number + "=");
		int flag = 1;
		int j = number;
		for (int i = 2; i < number; i++) {
			if (number == 2) {
				break;
			}
			if (number % i == 0) {
				System.out.print(i + "x");
				number /= i;
				i = 1;
			}
		}
		System.out.print(number);
		System.out.println();
	}

	static void wanshu() {
		Scanner in = new Scanner(System.in);
		System.out.println("请输入两个数字：");
		int beginnumber = in.nextInt();
		int endnumber = in.nextInt();
		int sum = 0, count = 0;
		int[] a = new int[10000];
		for (int number = beginnumber; number <= endnumber; number++) {
			for (int i = 1; i < number; i++) {
				if (number % i == 0) {
					sum += i;
				}
			}
			if (sum == number) {
				count++;
				a[count] = number;
			}
			sum = 0;
		}
		System.out.print("这两个数字之间的完数有：");
		for (int j = 1; j <= count; j++) {
			if (j != count)
				System.out.print(a[j] + " ");
			else
				System.out.print(a[j]);
		}
		System.out.println();
	}

	static void Tem() {
		// TODO 自动生成的方法存根
		Scanner in = new Scanner(System.in);
		System.out.println("请输入华氏温度：");
		int F = in.nextInt();
		double C;
		C = (F - 32) * (5.0 / 9);
		System.out.println("对应的摄氏温度为：");
		System.out.print((int) C);
	}

	static void Time() {
		System.out.println("时间换算");
		System.out.println("输入格式:\r\n" + "\r\n" + "\r\n"
				+ "一个整数，表示BJT的时和分。整数的个位和十位表示分，百位和千位表示小时。如果小时小于10，则没有千位部分；如果小时是0，则没有百位部分；如果小时不是0而且分小于10分，需要保留十位上的0。\r\n"
				+ "\r\n" + "\r\n" + "\r\n" + "\r\n" + "输出格式：\r\n" + "\r\n" + "\r\n"
				+ "一个整数，表示UTC的时和分。整数的个位和十位表示分，百位和千位表示小时。如果小时小于10，则没有千位部分；如果小时是0，则没有百位部分；如果小时不是0而且分小于10分，需要保留十位上的0。\r\n"
				+ "\r\n" + "\r\n" + "\r\n" + "\r\n" + "输入样例：\r\n" + "\r\n" + "\r\n" + "933\r\n" + "\r\n" + "\r\n"
				+ "\r\n" + "\r\n" + "输出样例：\r\n" + "\r\n" + "\r\n" + "133\r\n" + "\r\n" + "");
		System.out.print("现在请你输入一个数：");
		Scanner in = new Scanner(System.in);
		int BJT = in.nextInt();
		System.out.print("换算后的时间是：");
		if (BJT >= 800) {
			System.out.println(BJT - 800);
		} else {
			System.out.println(BJT - 800 + 2400);
		}
		System.out.println();
	}

	static void Img() {
		System.out.println("信号报告：");
		System.out.println("无线电台的RS制信号报告是由三两个部分组成的：\r\n" + "\r\n" + "R(Readability) 信号可辨度即清晰度.\r\n" + "\r\n"
				+ "S(Strength)    信号强度即大小.\r\n" + "\r\n" + "其中R位于报告第一位，共分5级，用1—5数字表示.\r\n" + "\r\n"
				+ "1---Unreadable\r\n" + "\r\n" + "2---Barely readable, occasional words distinguishable\r\n" + "\r\n"
				+ "3---Readable with considerable difficulty\r\n" + "\r\n"
				+ "4---Readable with practically no difficulty\r\n" + "\r\n" + "5---Perfectly readable\r\n" + "\r\n"
				+ "报告第二位是S，共分九个级别，用1—9中的一位数字表示\r\n" + "\r\n" + "1---Faint signals, barely perceptible\r\n" + "\r\n"
				+ "2---Very weak signals\r\n" + "\r\n" + "3---Weak signals\r\n" + "\r\n" + "4---Fair signals\r\n"
				+ "\r\n" + "5---Fairly good signals\r\n" + "\r\n" + "6---Good signals\r\n" + "\r\n"
				+ "7---Moderately strong signals\r\n" + "\r\n" + "8---Strong signals\r\n" + "\r\n"
				+ "9---Extremely strong signals\r\n" + "\r\n" + "现在，你的程序要读入一个信号报告的数字，然后输出对应的含义。如读到59，则输出：\r\n" + "\r\n"
				+ "Extremely strong signals, perfectly readable.\r\n" + "\r\n" + "\r\n" + "\r\n" + "\r\n" + "输入格式:\r\n"
				+ "\r\n" + "\r\n" + "一个整数，信号报告。整数的十位部分表示可辨度，个位部分表示强度。输入的整数范围是[11,59]内有效的数字，这个范围外的数字不可能出现在测试数据中。\r\n"
				+ "\r\n" + "\r\n" + "\r\n" + "\r\n" + "输出格式：\r\n" + "\r\n" + "\r\n"
				+ "一句话，表示这个信号报告的意义。按照题目中的文字，先输出表示强度的文字，跟上逗号和空格，然后是表示可辨度的文字，跟上句号。注意可辨度的句子的第一个字母是小写的。注意这里的标点符号都是英文的。\r\n"
				+ "\r\n" + "\r\n" + "\r\n" + "\r\n" + "输入样例：\r\n" + "\r\n" + "\r\n" + "33\r\n" + "\r\n" + "\r\n"
				+ "\r\n" + "\r\n" + "输出样例：\r\n" + "\r\n" + "\r\n"
				+ "Weak signals, readable with considerable difficulty.\r\n" + "\r\n" + "");
		System.out.println("现在请你输入：");
		Scanner in = new Scanner(System.in);
		String[] R = { "unreadable", "barely readable, occasional words distinguishable",
				"readable with considerable difficulty", "readable with practically no difficulty",
				"perfectly readable" };
		String[] S = { "Faint signals, barely perceptible", "Very weak signals", "Weak signals", "Fair signals",
				"Fairly good signals", "Good signals", "Moderately strong signals", "Strong signals",
				"Extremely strong signals" };
		int a = in.nextInt();
		System.out.print("输出为：");
		System.out.print(S[a % 10 - 1] + ", " + R[(a / 10) - 1] + ".");
		System.out.println();
	}

	static void numberOf() {
		System.out.println("题目内容：\r\n" + "\r\n" + "你的程序要读入一系列正整数数据，输入-1表示输入结束，-1本身不是输入的数据。程序输出读到的数据中的奇数和偶数的个数。\r\n"
				+ "\r\n" + "\r\n" + "\r\n" + "\r\n" + "输入格式:\r\n" + "\r\n" + "\r\n"
				+ "一系列正整数，整数的范围是（0,100000）。如果输入-1则表示输入结束。\r\n" + "\r\n" + "\r\n" + "\r\n" + "\r\n" + "输出格式：\r\n"
				+ "\r\n" + "\r\n" + "两个整数，第一个整数表示读入数据中的奇数的个数，第二个整数表示读入数据中的偶数的个数。两个整数之间以空格分隔。\r\n" + "\r\n" + "\r\n"
				+ "\r\n" + "\r\n" + "输入样例：\r\n" + "\r\n" + "\r\n" + "9 3 4 2 5 7 －1 \r\n" + "\r\n" + "\r\n" + "\r\n"
				+ "\r\n" + "输出样例：\r\n" + "\r\n" + "\r\n" + "4 2\r\n" + "\r\n" + "");
		System.out.println("现在请输入：");
		Scanner in = new Scanner(System.in);
		int[] a = new int[100];
		int i, n = 0;
		int numberofa = 0, numberofb = 0;
		i = in.nextInt();
		while (i != -1) {
			a[n] = i;
			n++;
			i = in.nextInt();
		}
		i = n - 1;
		n = 0;
		while (i > -1) {
			if (a[n] % 2 == 1)
				numberofa++;
			else
				numberofb++;
			i--;
			n++;
		}
		System.out.println(numberofa + " " + numberofb);
		System.out.println();
	}

	static void Cheracter() {
		System.out.println("题目内容：\r\n" + "\r\n" + "\r\n"
				+ "对数字求特征值是常用的编码算法，奇偶特征是一种简单的特征值。对于一个整数，从个位开始对每一位数字编号，个位是1号，十位是2号，以此类推。这个整数在第n位上的数字记作x，如果x和n的奇偶性相同，则记下一个1，否则记下一个0。按照整数的顺序把对应位的表示奇偶性的0和1都记录下来，就形成了一个二进制数字。比如，对于342315，这个二进制数字就是001101。\r\n"
				+ "按照二进制位值将1的位的位值加起来就得到了结果13。\r\n" + "\r\n" + "\r\n" + "\r\n" + "\r\n"
				+ "你的程序要读入一个非负整数，整数的范围是[0,100000]，然后按照上述算法计算出表示奇偶性的那个二进制数字，输出它对应的十进制值。\r\n" + "\r\n" + "\r\n" + "\r\n"
				+ "\r\n" + "提示：将整数从右向左分解，数位每次加1，而二进制值每次乘2。\r\n" + "\r\n" + "\r\n" + "\r\n" + "输入格式:\r\n" + "\r\n"
				+ "\r\n" + "一个非负整数，整数的范围是[0,1000000]。\r\n" + "\r\n" + "\r\n" + "\r\n" + "\r\n" + "输出格式：\r\n" + "\r\n"
				+ "\r\n" + "一个整数，表示计算结果。\r\n" + "\r\n" + "\r\n" + "\r\n" + "\r\n" + "输入样例：\r\n" + "\r\n" + "\r\n"
				+ "342315\r\n" + "\r\n" + "\r\n" + "\r\n" + "\r\n" + "输出样例：\r\n" + "\r\n" + "\r\n" + "13\r\n" + "\r\n"
				+ "");
		System.out.print("请输入：");
		Scanner in = new Scanner(System.in);
		int n = in.nextInt();
		int a, b = 0, c = 1;
		int i = 0;
		while (n > 0) {
			a = n % 10;
			if (a % 2 == c % 2)
				b = (int) (1 * Math.pow(2, i) + b);
			else
				b = (int) (0 * Math.pow(10, i) + b);
			n = n / 10;
			i++;
			c++;
		}
		System.out.println(b);
		System.out.println();
	}
}