commit 81a1888519d26951e8dfdc2223e009a0246c7c23
Author: zyx <1029606625@qq.com>
Date: Fri Sep 9 15:52:46 2022 +0800
2022/09/09 第一次提交
diff --git a/.idea/.gitignore b/.idea/.gitignore
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--- /dev/null
+++ b/.idea/.gitignore
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+# 默认忽略的文件
+/shelf/
+/workspace.xml
+# 基于编辑器的 HTTP 客户端请求
+/httpRequests/
+# Datasource local storage ignored files
+/dataSources/
+/dataSources.local.xml
diff --git a/.idea/.name b/.idea/.name
new file mode 100644
index 0000000..3d9eb8b
--- /dev/null
+++ b/.idea/.name
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+Demo1.java
\ No newline at end of file
diff --git a/.idea/misc.xml b/.idea/misc.xml
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+++ b/.idea/misc.xml
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+
\ No newline at end of file
diff --git a/.idea/modules.xml b/.idea/modules.xml
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+++ b/.idea/modules.xml
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+
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diff --git a/Week2/Week2.iml b/Week2/Week2.iml
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+++ b/Week2/Week2.iml
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+
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+
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diff --git a/Week2/src/Demo01.java b/Week2/src/Demo01.java
new file mode 100644
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--- /dev/null
+++ b/Week2/src/Demo01.java
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+import java.util.Scanner;
+
+public class Demo01 {
+ public static void main(String[] args) {
+ String again;
+ do {
+ int randomNumber = 1 + (int) (Math.random() * 1000);
+// System.out.println(randomNumber);
+ System.out.println("I have a number between 1 and 1000. \nCan you guess my number?\nPlease type your first guess.");
+ Scanner scanner = new Scanner(System.in);
+
+ boolean success = false;
+ int cnt = 1;
+ for (int i = 1; i <= 10; i++) {
+ int guessNumber = scanner.nextInt();
+
+ if (randomNumber == guessNumber) {
+ System.out.println("Excellent! You guessed the number");
+ success = true;
+ break;
+ } else {
+ if (i == 10) break;
+ if (guessNumber > randomNumber) {
+ System.out.println("Too High. Try Again.");
+ } else {
+ System.out.println("Too Low. Try Again");
+ }
+ }
+ cnt++;
+ System.out.println("Please type your guess again:");
+ }
+ if (success) {
+ System.out.println("Success! You have cost " + cnt + " times");
+ } else {
+ System.out.println("Sorry! You failed!\nThe answer is: " + randomNumber);
+ }
+
+ System.out.println("Would you like to play again (y or n)?：");
+ again = scanner.next();
+ }while ("y".equalsIgnoreCase(again));
+ System.out.println("Game Over! Welcome to play again!");
+ }
+}
diff --git a/Week2/src/work/Work1.java b/Week2/src/work/Work1.java
new file mode 100644
index 0000000..6a19ccb
--- /dev/null
+++ b/Week2/src/work/Work1.java
@@ -0,0 +1,49 @@
+package work;
+
+import java.util.Scanner;
+
+/**
+ * @author : 张宇轩
+ * @createTime : 2022/9/7 - 9:23
+ */
+public class Work1 {
+ public static void main(String[] args) {
+ String again;
+ do {
+ int randomNumber = 1 + (int) (Math.random() * 1000);
+// System.out.println(randomNumber);
+ System.out.println("I have a number between 1 and 1000. \nCan you guess my number?\nPlease type your first guess.");
+ Scanner scanner = new Scanner(System.in);
+
+ boolean success = false;
+ int cnt = 1;
+ for (int i = 1; i <= 10; i++) {
+ int guessNumber = scanner.nextInt();
+
+ if (randomNumber == guessNumber) {
+ System.out.println("Excellent! You guessed the number");
+ success = true;
+ break;
+ } else {
+ if (i == 10) break;
+ if (guessNumber > randomNumber) {
+ System.out.println("Too High. Try Again.");
+ } else {
+ System.out.println("Too Low. Try Again");
+ }
+ }
+ cnt++;
+ System.out.println("Please type your guess again:");
+ }
+ if (success) {
+ System.out.println("Success! You have cost " + cnt + " times");
+ } else {
+ System.out.println("Sorry! You failed!\nThe answer is: " + randomNumber);
+ }
+
+ System.out.println("Would you like to play again (y or n)?：");
+ again = scanner.next();
+ } while ("y".equalsIgnoreCase(again));
+ System.out.println("Game Over! Welcome to play again!");
+ }
+}
diff --git a/Week2/src/work/Work2.java b/Week2/src/work/Work2.java
new file mode 100644
index 0000000..ec99a58
--- /dev/null
+++ b/Week2/src/work/Work2.java
@@ -0,0 +1,43 @@
+package work;
+
+import java.util.Scanner;
+
+/**
+ * @author : 张宇轩
+ * @createTime : 2022/9/7 - 9:23
+ */
+public class Work2 {
+ public static void main(String[] args) {
+ Scanner scanner = new Scanner(System.in);
+ int n = -1;
+ while (n == -1) {
+ System.out.println("请输入一个正整数(3<=n<=7)：");
+ n = checkInputNumber(scanner,3,7);
+ }
+
+ int begin = (int) Math.pow(10,n-1), end = (int) (Math.pow(10,n) -1);
+ for (int i = begin; i <= end; i++) {
+ int sum = 0, tmp = i;
+ while (tmp != 0){
+ sum += (int) Math.pow(tmp%10,n);
+ tmp /= 10;
+ }
+ if(sum == i) System.out.println(sum);
+ }
+ }
+
+ public static int checkInputNumber(Scanner scanner, int low, int high) {
+ String input = scanner.next();
+ try {
+ int opt = Integer.parseInt(input);
+ if (opt >= low && opt <= high)
+ return opt;
+ else {
+ System.out.println("输入无效，只能输入" + low + "-" + high);
+ }
+ } catch (NumberFormatException e) {
+ System.out.println("输入无效，只能输入" + low + "-" + high);
+ }
+ return -1;
+ }
+}
diff --git a/Week2/src/work/Work2_0908.java b/Week2/src/work/Work2_0908.java
new file mode 100644
index 0000000..028b7b9
--- /dev/null
+++ b/Week2/src/work/Work2_0908.java
@@ -0,0 +1,184 @@
+package work;
+
+import java.io.IOException;
+import java.util.Scanner;
+
+/**
+ * 菜单
+ * 作业2
+ * 1.猜数
+ * 2.求解水仙花数
+ * 3.打印图形
+ * 4.求解表达式
+ */
+public class Work2_0908 {
+ public static void main(String[] args) throws IOException {
+ Scanner scanner = new Scanner(System.in);
+ while (true){
+ System.out.println("作业2");
+ System.out.println("1.猜数游戏");
+ System.out.println("2.求解水仙花数");
+ System.out.println("3.打印菱形");
+ System.out.println("4.求解表达式");
+ System.out.println("0.退出程序");
+ int opt = -1;
+ while (opt == -1) {
+ System.out.print(">>>请输入选项(0-4)：");
+ opt = checkInputNumber(scanner,0,4);
+ }
+ switch (opt){
+ case 1:
+ guessNumber(scanner);
+ break;
+ case 2:
+ getNarcissisticNumber(scanner);
+ break;
+ case 3:
+ printRhombus();
+ break;
+ case 4:
+ calcExpression(scanner);
+ break;
+ default:
+ return;
+ }
+ System.out.println("按任意键继续...");
+ System.in.read();
+ }
+
+ }
+
+ /**
+ * 猜数游戏
+ * @param scanner 通用的输入
+ */
+ public static void guessNumber(Scanner scanner) {
+ String again;
+ do {
+ int randomNumber = 1 + (int) (Math.random() * 1000);
+ System.out.println("I have a number between 1 and 1000. \nCan you guess my number?\nPlease type your first guess.");
+
+ boolean success = false;
+ int cnt = 1;
+ for (int i = 1; i <= 10; i++) {
+ int guessNumber = scanner.nextInt();
+
+ if (randomNumber == guessNumber) {
+ System.out.println("Excellent! You guessed the number");
+ success = true;
+ break;
+ } else {
+ if (i == 10) break;
+ if (guessNumber > randomNumber) {
+ System.out.println("Too High. Try Again.");
+ } else {
+ System.out.println("Too Low. Try Again");
+ }
+ }
+ cnt++;
+ System.out.println("Please type your guess again:");
+ }
+ if (success) {
+ System.out.println("Success! You have cost " + cnt + " times");
+ } else {
+ System.out.println("Sorry! You failed!\nThe answer is: " + randomNumber);
+ }
+
+ System.out.println("Would you like to play again (y or n)?：");
+ again = scanner.next();
+ } while ("y".equalsIgnoreCase(again));
+ System.out.println("Game Over! Welcome to play again!");
+ }
+
+ /**
+ * 求解水仙花数
+ * @param scanner 通用的输入
+ */
+ public static void getNarcissisticNumber(Scanner scanner) {
+ int n = -1;
+ while (n == -1) {
+ System.out.println("请输入一个正整数(3<=n<=7)：");
+ n = checkInputNumber(scanner, 3, 7);
+ }
+
+ int begin = (int) Math.pow(10, n - 1), end = (int) (Math.pow(10, n) - 1);
+ for (int i = begin; i <= end; i++) {
+ int sum = 0, tmp = i;
+ while (tmp != 0) {
+ sum += (int) Math.pow(tmp % 10, n);
+ tmp /= 10;
+ }
+ if (sum == i) System.out.println(sum);
+ }
+ System.out.println("求解完毕！");
+ }
+
+
+ /**
+ * 输出菱形图案
+ */
+ public static void printRhombus() {
+ for (int i = 1; i <= 3; i++) {//上半部分
+ for (int j = 1; j <= 3 - i; j++) {
+ System.out.print(" ");
+ }
+ for (int j = 1; j <= 2 * i - 1; j++) {
+ System.out.print("*");
+ }
+ System.out.println();
+ }
+ for (int i = 1; i <= 3; i++) {//下半部分
+ for (int j = 1; j <= i; j++) {
+ System.out.print(" ");
+ }
+ for (int j = 1; j <= 5 - 2 * i; j++) {
+ System.out.print("*");
+ }
+ System.out.println();
+ }
+ }
+
+ /**
+ * 计算表达式
+ * @param scanner 通用的输入
+ */
+ public static void calcExpression(Scanner scanner) {
+ System.out.println("计算1 + 1/2 - 1/3 + 1/4 - 1/5 + ... + 1/n");
+
+ int n;
+ while (true) {
+ System.out.println("请输入n(n>=1)：");
+ String input = scanner.next();
+ try {
+ n = Integer.parseInt(input);
+ if (n >= 1) break;
+ } catch (NumberFormatException ignored) {}
+ }
+
+ int flag = 1;
+ double sum = 1;
+ if (n >= 2) {
+ for (int i = 2; i <= n; i++) {
+ sum += 1.0 * flag / i;
+ flag = -flag;
+ }
+ }
+ System.out.println("表达式的值为：" + sum);
+ }
+
+ public static int checkInputNumber(Scanner scanner, int low, int high) {
+ String input = scanner.next();
+ try {
+ int opt = Integer.parseInt(input);
+ if (opt >= low && opt <= high)
+ return opt;
+ else {
+ System.out.println("输入无效，只能输入" + low + "-" + high);
+ }
+ } catch (NumberFormatException e) {
+ System.out.println("输入无效，只能输入" + low + "-" + high);
+ }
+ return -1;
+ }
+}
+
diff --git a/java_class.iml b/java_class.iml
new file mode 100644
index 0000000..c90834f
--- /dev/null
+++ b/java_class.iml
@@ -0,0 +1,11 @@
+
+
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/week1/src/Demo1.java b/week1/src/Demo1.java
new file mode 100644
index 0000000..564f91c
--- /dev/null
+++ b/week1/src/Demo1.java
@@ -0,0 +1,29 @@
+import java.util.Scanner;
+
+public class Demo1 {
+ public static void main(String[] args) {
+ final double managerCommission = 0.12;
+ final double siteCommission = 0.03;
+
+ String songTitle;
+ double songPrice;
+ int copies;
+ double totalRevenue;
+ double mamagerRevenue;
+ double siteRevenue;
+
+ Scanner scanner = new Scanner(System.in);
+ System.out.println();
+ songTitle = scanner.nextLine();
+ songPrice = scanner.nextDouble();
+ copies = scanner.nextInt();
+
+ totalRevenue = songPrice * copies;
+ mamagerRevenue = totalRevenue * managerCommission;
+ siteRevenue = totalRevenue * siteCommission;
+
+ System.out.println(totalRevenue);
+ System.out.println(mamagerRevenue);
+ System.out.println(siteRevenue);
+ }
+}
diff --git a/week1/src/Demo2.java b/week1/src/Demo2.java
new file mode 100644
index 0000000..101373d
--- /dev/null
+++ b/week1/src/Demo2.java
@@ -0,0 +1,20 @@
+import java.util.Scanner;
+
+public class Demo2 {
+ public static void main(String[] args) {
+ final int BOX_CNT = 24;
+ final int CONTAINER_CNT = 75;
+
+ System.out.println("请输入饼干总数：");
+ Scanner scanner = new Scanner(System.in);
+ int totalBiscuit = scanner.nextInt();
+
+ int remainBiscuit = totalBiscuit % BOX_CNT;
+ int boxNumber = totalBiscuit / BOX_CNT;
+ int remainBox = boxNumber % CONTAINER_CNT;
+ int containerNumber = boxNumber / CONTAINER_CNT;
+
+ System.out.println(totalBiscuit + "个饼干装了" + boxNumber + "个盒子，" + boxNumber + "个盒子装了" + containerNumber + "个容器");
+ System.out.println("剩余" + remainBiscuit + "个饼干，" + remainBox + "个盒子");
+ }
+}
diff --git a/week1/src/work/Work1.java b/week1/src/work/Work1.java
new file mode 100644
index 0000000..4ebae3d
--- /dev/null
+++ b/week1/src/work/Work1.java
@@ -0,0 +1,25 @@
+package work;
+
+import java.util.Scanner;
+
+public class Work1 {
+ public static void main(String[] args) {
+ System.out.println("请输入价格：");
+ double price = new Scanner(System.in).nextDouble();
+ int twoDollarCnt = (int) price / 2;
+ int oneDollarCnt = (int) price % 2;
+
+ double decimal = (price*100) - twoDollarCnt*200 - oneDollarCnt*100;
+ int fiftyCentCnt = (int) (decimal / 50);
+ int twentyCentCnt = (int) ((decimal - 50*fiftyCentCnt) / 20);
+ int tenCentCnt = (int) ((decimal - 50*fiftyCentCnt - 20*twentyCentCnt) / 10);
+ int fiveCentCnt = (int) ((decimal - 50*fiftyCentCnt - 20*twentyCentCnt - 10*tenCentCnt) / 5);
+
+ System.out.println("$2数量：" + twoDollarCnt);
+ System.out.println("$1数量：" + oneDollarCnt);
+ System.out.println("￠50数量：" + fiftyCentCnt);
+ System.out.println("￠20数量：" + twentyCentCnt);
+ System.out.println("￠10数量：" + tenCentCnt);
+ System.out.println("￠5数量：" + fiveCentCnt);
+ }
+}
diff --git a/week1/src/work/Work2.java b/week1/src/work/Work2.java
new file mode 100644
index 0000000..59dd120
--- /dev/null
+++ b/week1/src/work/Work2.java
@@ -0,0 +1,67 @@
+package work;
+
+import java.math.BigDecimal;
+import java.math.RoundingMode;
+import java.util.Scanner;
+
+public class Work2 {
+ public static void main(String[] args) {
+ double price = 0;
+ Scanner scanner = new Scanner(System.in);
+ System.out.println("输入图片长度（英寸）：");
+ double length = scanner.nextDouble();
+ System.out.println("输入图片宽度（英寸）：");
+ double width = scanner.nextDouble();
+
+ //纸板和玻璃的面积按与 照片 等大处理
+ price += length * width * 0.09;//照片
+
+ double framePerimeter = 2 * length + 2 * width + 4;//框架周长
+
+ System.out.println("选择画框类型（0:普通 / 1:花式）：");
+ int optFrame = -1;
+ while (optFrame == -1){
+ optFrame = checkInputNumber(scanner,0,1);
+ }
+ if (optFrame == 0){
+ price += framePerimeter * 0.15;
+ }else price += framePerimeter * 0.25;
+
+ System.out.println("选择画框颜色（0:白色 / 1:其他）：");
+ int optColor = -1;
+ while (optColor == -1){
+ optColor = checkInputNumber(scanner,0,1);
+ }
+ if (optColor == 1) {
+ price += framePerimeter * 0.1;
+ }
+
+ System.out.println("是否需要放置皇冠（0:是 / 1:否）：");
+ int optIfCrown = -1;
+ while (optIfCrown == -1){
+ optIfCrown = checkInputNumber(scanner,0,1);
+ }
+ if (optIfCrown == 0){
+ System.out.println("输入要放置的皇冠数量：");
+ int crownCnt = scanner.nextInt();
+ price += crownCnt * 0.35;
+ }
+ System.out.println("总费用：" + new BigDecimal(price).setScale(2, RoundingMode.HALF_UP));
+ }
+
+
+ public static int checkInputNumber(Scanner scanner, int low, int high) {
+ String input = scanner.next();
+ try {
+ int opt = Integer.parseInt(input);
+ if (opt >= low && opt <= high)
+ return opt;
+ else {
+ System.out.println("输入无效，只能输入" + low + "-" + high);
+ }
+ } catch (NumberFormatException e) {
+ System.out.println("输入无效，只能输入" + low + "-" + high);
+ }
+ return -1;
+ }
+}
diff --git a/week1/week1.iml b/week1/week1.iml
new file mode 100644
index 0000000..c90834f
--- /dev/null
+++ b/week1/week1.iml
@@ -0,0 +1,11 @@
+
+
+
+
+
+
+
+
+
+
+
\ No newline at end of file