8 | * 数列的第一项为n，以后各项为前一项的平方根，求数列的前m项的和。 9 | * 输入描述: 10 | * 输入数据有多组，每组占一行，由两个整数n（n < 10000）和m(m < 1000)组成，n和m的含义如前所述。 11 | *
12 | *
13 | * 输出描述:
14 | * 对于每组输入数据，输出该数列的和，每个测试实例占一行，要求精度保留2位小数。
15 | */
16 | public class Test_NumberSum {
17 |
18 | public static void main(String[] args) {
19 | Scanner scanner = new Scanner(System.in);
20 | while (scanner.hasNext()) {
21 | double m = scanner.nextDouble();
22 | double n = scanner.nextDouble();
23 | double sum = 0;
24 | for (int i = 0; i < n; i++) {
25 | sum = sum + m;
26 | m = Math.pow(m, 0.5);
27 | }
28 | System.out.println(String.format("%.2f", sum));//保证小数掉过后两位有效数字
29 | }
30 | }
31 | }
32 |
--------------------------------------------------------------------------------
/src/main/java/com/zs/demo/bean/Car.java:
--------------------------------------------------------------------------------
1 | package com.zs.demo.bean;
2 |
3 | import org.springframework.boot.context.properties.ConfigurationProperties;
4 |
5 | /**
6 | * @author 么么么哒
7 | * @create 2021/1/9
8 | */
9 | //@Component
10 | @ConfigurationProperties(prefix = "mycar")
11 | public class Car {
12 | private String brand;
13 | private Integer price;
14 | public String getBrand() {
15 | return brand;
16 | }
17 |
18 | public void setBrand(String brand) {
19 | this.brand = brand;
20 | }
21 |
22 | public Integer getPrice() {
23 | return price;
24 | }
25 |
26 | public void setPrice(Integer price) {
27 | this.price = price;
28 | }
29 |
30 | @Override
31 | public String toString() {
32 | return "Car{" +
33 | "brand='" + brand + '\'' +
34 | ", price=" + price +
35 | '}';
36 | }
37 | }
38 |
--------------------------------------------------------------------------------
/src/main/java/com/zs/demo/bean/Book.java:
--------------------------------------------------------------------------------
1 | package com.zs.demo.bean;
2 |
3 | public class Book {
4 | private String bookName;
5 | private String author;
6 |
7 | public Book() {
8 | }
9 |
10 | public Book(String bookName, String author) {
11 | this.bookName = bookName;
12 | this.author = author;
13 | }
14 |
15 | public String getBookName() {
16 | return bookName;
17 | }
18 |
19 | public void setBookName(String bookName) {
20 | this.bookName = bookName;
21 | }
22 |
23 | public String getAuthor() {
24 | return author;
25 | }
26 |
27 | public void setAuthor(String author) {
28 | this.author = author;
29 | }
30 |
31 | @Override
32 | public String toString() {
33 | return "Book{" +
34 | "bookName='" + bookName + '\'' +
35 | ", author='" + author + '\'' +
36 | '}';
37 | }
38 | }
39 |
--------------------------------------------------------------------------------
/src/main/java/com/zs/demo/config/MyConfig.java:
--------------------------------------------------------------------------------
1 | package com.zs.demo.config;
2 |
3 | import com.zs.demo.bean.Car;
4 | import com.zs.demo.bean.Pig;
5 | import com.zs.demo.bean.User;
6 | import org.springframework.boot.context.properties.EnableConfigurationProperties;
7 | import org.springframework.context.annotation.Bean;
8 | import org.springframework.context.annotation.ImportResource;
9 |
10 | /**
11 | * @author 么么么哒
12 | * @create 2021/1/9
13 | */
14 | //@Configuration(proxyBeanMethods = false)
15 | //@ConditionalOnBean(name = "pig1")
16 | @ImportResource("classpath:beans.xml")
17 | @EnableConfigurationProperties(Car.class)
18 | public class MyConfig {
19 | @Bean
20 | public User user1(){
21 | User user = new User("zs",12);
22 | user.setPig(pig1());
23 | System.out.println(user.toString());
24 | return user;
25 | }
26 |
27 | @Bean("pig11")
28 | public Pig pig1(){
29 | return new Pig("zs");
30 | }
31 | }
32 |
--------------------------------------------------------------------------------
/src/main/java/com/zs/demo/bean/Article.java:
--------------------------------------------------------------------------------
1 | package com.zs.demo.bean;
2 |
3 | import io.searchbox.annotations.JestId;
4 |
5 | public class Article {
6 |
7 | @JestId
8 | private Integer id;
9 | private String author;
10 | private String title;
11 | private String content;
12 |
13 | public Integer getId() {
14 | return id;
15 | }
16 |
17 | public void setId(Integer id) {
18 | this.id = id;
19 | }
20 |
21 | public String getAuthor() {
22 | return author;
23 | }
24 |
25 | public void setAuthor(String author) {
26 | this.author = author;
27 | }
28 |
29 | public String getTitle() {
30 | return title;
31 | }
32 |
33 | public void setTitle(String title) {
34 | this.title = title;
35 | }
36 |
37 | public String getContent() {
38 | return content;
39 | }
40 |
41 | public void setContent(String content) {
42 | this.content = content;
43 | }
44 | }
45 |
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/src/main/java/com/zs/demo/ag/sort/selectSort.java:
--------------------------------------------------------------------------------
1 | package com.zs.demo.ag.sort;
2 |
3 | public class selectSort {
4 | public static void main(String[] args) {
5 | int[] array = {3, 4, 1, 5, 2};
6 |
7 | //剩余中找最小的
8 | for (int i = 0; i < array.length; i++) {
9 | //只为了找最小的
10 | int minPos = i;
11 | for (int j = i + 1; j < array.length; j++) {
12 | if (array[j] < array[minPos]) {
13 | minPos = j;
14 | }
15 | }
16 | swap(array, i, minPos);
17 | }
18 | print(array);
19 | }
20 |
21 | private static void swap(int[] array, int i, int minPos) {
22 | int temp = array[minPos];
23 | array[minPos] = array[i];
24 | array[i] = temp;
25 | }
26 |
27 | private static void print(int[] array) {
28 | for (int i = 0; i < array.length; i++) {
29 | System.out.print(array[i] + " ");
30 | }
31 | }
32 | }
33 |
--------------------------------------------------------------------------------
/src/main/java/com/zs/demo/bean/Department.java:
--------------------------------------------------------------------------------
1 | package com.zs.demo.bean;
2 |
3 |
4 | import lombok.Data;
5 |
6 | import java.io.Serializable;
7 |
8 | @Data
9 | public class Department implements Serializable {
10 |
11 | private static final long serialVersionUID = -9002515762089328752L;
12 | private Integer id;
13 | private String departmentName;
14 |
15 |
16 | public Department() {
17 | super();
18 | // TODO Auto-generated constructor stub
19 | }
20 | public Department(Integer id, String departmentName) {
21 | super();
22 | this.id = id;
23 | this.departmentName = departmentName;
24 | }
25 | public Integer getId() {
26 | return id;
27 | }
28 | public void setId(Integer id) {
29 | this.id = id;
30 | }
31 | public String getDepartmentName() {
32 | return departmentName;
33 | }
34 | public void setDepartmentName(String departmentName) {
35 | this.departmentName = departmentName;
36 | }
37 | @Override
38 | public String toString() {
39 | return "Department [id=" + id + ", departmentName=" + departmentName + "]";
40 | }
41 |
42 |
43 |
44 |
45 |
46 | }
47 |
--------------------------------------------------------------------------------
/src/main/java/com/zs/demo/bean/Desk.java:
--------------------------------------------------------------------------------
1 | package com.zs.demo.bean;
2 |
3 | import org.springframework.data.elasticsearch.annotations.Document;
4 |
5 | @Document(indexName = "atguigu",type = "book")
6 | public class Desk {
7 | private Integer id;
8 | private String bookName;
9 | private String author;
10 |
11 | public Integer getId() {
12 | return id;
13 | }
14 |
15 | public void setId(Integer id) {
16 | this.id = id;
17 | }
18 |
19 | public String getBookName() {
20 | return bookName;
21 | }
22 |
23 | public void setBookName(String bookName) {
24 | this.bookName = bookName;
25 | }
26 |
27 | public String getAuthor() {
28 | return author;
29 | }
30 |
31 | public void setAuthor(String author) {
32 | this.author = author;
33 | }
34 |
35 | @Override
36 | public String toString() {
37 | return "Book{" +
38 | "id=" + id +
39 | ", bookName='" + bookName + '\'' +
40 | ", author='" + author + '\'' +
41 | '}';
42 | }
43 | }
44 |
--------------------------------------------------------------------------------
/src/main/java/com/zs/demo/bean/User.java:
--------------------------------------------------------------------------------
1 | package com.zs.demo.bean;
2 |
3 | /**
4 | * @author 么么么哒
5 | * @create 2021/1/9
6 | */
7 | public class User {
8 | public String name;
9 | private Integer age;
10 |
11 | private Pig pig;
12 |
13 | public User(String name, Integer age) {
14 | this.name = name;
15 | this.age = age;
16 | }
17 |
18 | public User() {
19 |
20 | }
21 |
22 | public String getName() {
23 | return name;
24 | }
25 |
26 | public void setName(String name) {
27 | this.name = name;
28 | }
29 |
30 | public Integer getAge() {
31 | return age;
32 | }
33 |
34 | public void setAge(Integer age) {
35 | this.age = age;
36 | }
37 |
38 | public Pig getPig() {
39 | return pig;
40 | }
41 |
42 | public void setPig(Pig pig) {
43 | this.pig = pig;
44 | }
45 |
46 | @Override
47 | public String toString() {
48 | return "User{" +
49 | "name='" + name + '\'' +
50 | ", age=" + age +
51 | ", pig=" + pig +
52 | '}';
53 | }
54 | }
55 |
--------------------------------------------------------------------------------
/src/main/java/com/zs/demo/ag/RobotCountWays.java:
--------------------------------------------------------------------------------
1 | package com.zs.demo.ag;
2 |
3 | import java.util.Scanner;
4 |
5 | public class RobotCountWays {
6 | public static void main(String[] args) {
7 | Scanner scanner = new Scanner(System.in);
8 | while (scanner.hasNext()) {
9 | int x = scanner.nextInt();
10 | int y = scanner.nextInt();
11 | System.out.println(countWays1(x, y));
12 | }
13 | }
14 |
15 | private static int countWays(int x, int y) {
16 | int[][] dp = new int[x][y];
17 | for (int i = 1; i < y; i++)
18 | dp[0][i] = 1;
19 | for (int i = 1; i < x; i++)
20 | dp[i][0] = 1;
21 | for (int i = 1; i < x; i++)
22 | for (int j = 1; j < y; j++)
23 | dp[i][j] = dp[i - 1][j] + dp[i][j - 1];
24 | return dp[x - 1][y - 1];
25 | }
26 |
27 |
28 | public static int countWays1(int x, int y) {
29 | if (x == 1 || y == 1)
30 | return 1;
31 | System.out.println(x);
32 | System.out.println(y);
33 | return countWays1(x - 1, y) + countWays1(x, y - 1);
34 | }
35 | }
36 |
--------------------------------------------------------------------------------
/src/main/java/com/zs/demo/ag/TriangleSum.java:
--------------------------------------------------------------------------------
1 | package com.zs.demo.ag;
2 |
3 | import java.util.Scanner;
4 |
5 | /**
6 | * 5
7 | * 7
8 | * 3 8
9 | * 8 1 0
10 | * 2 7 4 4
11 | * 4 5 2 6 5
12 | */
13 | public class TriangleSum {
14 | static int n = 0;
15 | static int[][] array = null;
16 | static int[][] maxSum = null;
17 | public static void main(String[] args) {
18 | while(true){
19 | Scanner scanner = new Scanner(System.in);
20 | n = scanner.nextInt();
21 | array = new int[n + 1][n + 1];
22 | maxSum = new int[n + 1][n + 1];
23 | for (int i = 1; i <= n; i++) {
24 | for (int j = 1; j <= i; j++) {
25 | array[i][j] = scanner.nextInt();
26 | maxSum[i][j] = -1;
27 | }
28 | }
29 | System.out.println(maxSum(1,1));
30 | }
31 | }
32 |
33 | private static int maxSum(int x, int y) {
34 | if(maxSum[x][y] != -1) return maxSum[x][y];
35 | if (x == n)
36 | return array[x][y];
37 | else
38 | return Math.max(maxSum(x + 1,y),maxSum(x + 1,y + 1)) + array[x][y];
39 | }
40 |
41 | }
--------------------------------------------------------------------------------
/src/main/java/com/zs/demo/ag/hw/randomSort.java:
--------------------------------------------------------------------------------
1 | package com.zs.demo.ag.hw;
2 |
3 | import java.io.BufferedReader;
4 | import java.io.InputStreamReader;
5 | import java.util.TreeSet;
6 | import java.util.Scanner;
7 | import java.util.TreeSet;
8 |
9 | public class randomSort {
10 | /**
11 | * 明明想在学校中请一些同学一起做一项问卷调查，为了实验的客观性，
12 | * 他先用计算机生成了N个1到1000之间的随机整数（N≤1000）
13 | * ，对于其中重复的数字，只保留一个，把其余相同的数去掉，
14 | * 不同的数对应着不同的学生的学号。然后再把这些数从小到大排序，按照排好的顺序去找同学做调查。
15 | * 请你协助明明完成“去重”与“排序”的工作(同一个测试用例里可能会有多组数据，希望大家能正确处理)。
16 | */
17 |
18 | public static void main(String[] args)throws Exception{
19 | BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
20 | String str;
21 |
22 | while ((str = br.readLine()) != null) {
23 | boolean[] flags = new boolean[1001];
24 | StringBuilder sb = new StringBuilder();
25 | int n = Integer.valueOf(str);
26 | for (int i = 0; i < n; i++)
27 | flags[Integer.valueOf(br.readLine())]=true;
28 |
29 | for(int i=1;i<1001;i++){
30 | if(flags[i])
31 | sb.append(i).append("\n");
32 | }
33 | sb.deleteCharAt(sb.length() - 1);
34 | System.out.println(sb.toString());
35 | }
36 | }
37 | }
38 |
--------------------------------------------------------------------------------
/src/main/java/com/zs/demo/ag/SpaceReplace.java:
--------------------------------------------------------------------------------
1 | package com.zs.demo.ag;
2 |
3 |
4 | public class SpaceReplace {
5 | public static void main(String[] args) {
6 | StringBuffer stringBuffer = new StringBuffer("we are lucky");
7 | System.out.println(spaceReplace(stringBuffer));
8 | }
9 |
10 | private static String spaceReplace(StringBuffer stringBuffer) {
11 | int numSpace = 0;
12 | for (int i = 0; i < stringBuffer.length(); i++) {
13 | if (stringBuffer.charAt(i) == ' ') {
14 | numSpace++;
15 | }
16 | }
17 | int oldIndex = stringBuffer.length() - 1;
18 | int stringLength = stringBuffer.length() + numSpace * 2;
19 | int newIndex = stringLength - 1;
20 | stringBuffer.setLength(stringLength);
21 | for (; oldIndex >= 0 && oldIndex < stringLength; --oldIndex) {
22 | if (stringBuffer.charAt(oldIndex) == ' ') {
23 | stringBuffer.setCharAt(newIndex--, '%');
24 | stringBuffer.setCharAt(newIndex--, '2');
25 | stringBuffer.setCharAt(newIndex--, '0');
26 | } else {
27 | stringBuffer.setCharAt(newIndex--, stringBuffer.charAt(oldIndex));
28 | }
29 | }
30 | return stringBuffer.toString();
31 | }
32 | }
33 |
34 |
--------------------------------------------------------------------------------
/src/main/java/com/zs/demo/controller/EmployeeController.java:
--------------------------------------------------------------------------------
1 | package com.zs.demo.controller;
2 |
3 | import com.zs.demo.bean.Employee;
4 | import com.zs.demo.service.EmployeeService;
5 | import org.springframework.beans.factory.annotation.Autowired;
6 | import org.springframework.web.bind.annotation.GetMapping;
7 | import org.springframework.web.bind.annotation.PathVariable;
8 | import org.springframework.web.bind.annotation.RestController;
9 |
10 | @RestController
11 | public class EmployeeController {
12 |
13 | @Autowired
14 | EmployeeService employeeService;
15 |
16 | @GetMapping("/emp/{id}")
17 | public Employee getEmployee(@PathVariable("id") Integer id){
18 | Employee employee = employeeService.getEmp(id);
19 | return employee;
20 | }
21 |
22 | @GetMapping("/emp")
23 | public Employee update(Employee employee){
24 | Employee emp = employeeService.updateEmp(employee);
25 |
26 | return emp;
27 | }
28 |
29 | @GetMapping("/delemp")
30 | public String deleteEmp(Integer id){
31 | employeeService.deleteEmp(id);
32 | return "success";
33 | }
34 |
35 | @GetMapping("/emp/lastname/{lastName}")
36 | public Employee getEmpByLastName(@PathVariable("lastName") String lastName){
37 | return employeeService.getEmpByLastName(lastName);
38 | }
39 |
40 | }
41 |
--------------------------------------------------------------------------------
/src/main/resources/application.properties:
--------------------------------------------------------------------------------
1 | mycar.brand=YDDD
2 | mycar.price=10000
3 |
4 | debug=true
5 | spring.banner.image.location=banner.jpg
6 | spring.profiles.active=dev
7 |
8 | spring.datasource.url=jdbc:mysql://10.47.128.129:3306/xhwmppre
9 | spring.datasource.username=fabu
10 | spring.datasource.password=73R4_h8td6fE
11 |
12 | spring.mvc.view.prefix=/WEB-INF/
13 | spring.mvc.view.suffix=.jsp
14 |
15 |
16 | # ���������õ����Զ�����Դ��������ܵ�properties��
17 | server.servlet.encoding.enabled=true
18 | server.spring.http.encoding.charset=utf-8
19 | server.spring.http.encoding.force=true
20 |
21 | #mybatis.mapperLocations=classpath*:com/example/demo/mapper/*.xml
22 | #mybatis.configuration.map-underscore-to-camel-case=true
23 |
24 | # ָ��ȫ�������ļ�λ�� Ҳ����ָ��ӳ���ļ�λ��
25 | mybatis.mapper-locations=classpath*:com/zs/demo/dao/mapper/*.xml
26 | mybatis.configuration.map-underscore-to-camel-case=true
27 |
28 |
29 | spring.redis.host=127.0.0.1
30 |
31 | logging.level.com.zs.demo.dao.mapper=debug
32 |
33 | #spring.rabbitmq.virtual-host=
34 | spring.rabbitmq.host=127.0.0.1
35 | spring.rabbitmq.username=guest
36 | spring.rabbitmq.password=guest
37 |
38 | #spring.kafka.bootstrap-servers=127.0.0.1:9092
39 |
40 | spring.elasticsearch.jest.uris=http://127.0.0.1:9200
41 | spring.data.elasticsearch.cluster-name=elasticsearch
42 | spring.data.elasticsearch.repositories.enabled = true
43 | spring.data.elasticsearch.cluster-nodes =127.0.0.1:9300
--------------------------------------------------------------------------------
/src/main/java/com/zs/demo/service/DeptService.java:
--------------------------------------------------------------------------------
1 | package com.zs.demo.service;
2 |
3 | import com.zs.demo.bean.Department;
4 | import com.zs.demo.dao.DepartmentDao;
5 | import org.springframework.beans.factory.annotation.Autowired;
6 | import org.springframework.beans.factory.annotation.Qualifier;
7 | import org.springframework.cache.Cache;
8 | import org.springframework.cache.annotation.Cacheable;
9 | import org.springframework.data.redis.cache.RedisCacheManager;
10 | import org.springframework.stereotype.Service;
11 |
12 |
13 | @Service
14 | public class DeptService {
15 |
16 | @Autowired
17 | DepartmentDao departmentDao;
18 |
19 | @Qualifier("rManager")
20 | @Autowired
21 | RedisCacheManager deptCacheManager;
22 |
23 |
24 | /**
25 | * 缓存的数据能存入redis；
26 | * 第二次从缓存中查询就不能反序列化回来；
27 | * 存的是dept的json数据;CacheManager默认使用RedisTemplate