stream流遍历list的对象然后给name赋值为随机3位数字 语言方向:Java


```java import java.util.ArrayList; import java.util.List; import java.util.Random; public class StreamExample { public static void main(String[] args) { // 创建一个包含对象的 List List<Person> personList = new ArrayList<>(); personList.add(new Person()); personList.add(new Person()); personList.add(new Person()); // 使用 Stream 流为对象的 name 赋值为随机 3 位数字 personList.stream().forEach(person -> { Random random = new Random(); int randomNumber = random.nextInt(900) + 100; // 生成 100 - 999 的随机数 person.setName(String.valueOf(randomNumber)); // 赋值 }); } static class Person { private String name; public String getName() { return name; } public void setName(String name) { this.name = name; } } } ``` 补充提问: 1. 是否需要对生成的随机数字进行特殊处理,比如排除某些特定数字? 2. 对赋值后的 name 是否有进一步的操作需求? 3. 是否要考虑多线程环境下的并发问题? [2024-12-19 12:10:38 | AI写代码神器 | 283点数解答]
- 比如我是一个公司的老板,我开了一家网上课程网站,我让我的teamleader帮我统计一下,目前该公司在线课程有多少个?怎么办呢,转化为代码如下: import java.util.arraylist:← import jaya.util.list:← public class boss{← public void commandchecknumber (teamleader teamleader){ list<course> list = new arraylist<course2o: for (int=0;i<200:i++){ list. add(new course(): teamleader.checknumberofcourses(list); import jave.util.list:e public class teamleader() public void checknumberofcourses(list list){ syatem,out.println("总有课程"+1i=t,size()); public class course( 这样写的代码就是违(182点数解答 | 2024-10-10 16:23:27)205
- 比如我是一个公司的老板,我开了一家网上课程网站,我让我的teamleader帮我统计一下,目前该公司在线课程有多少个?怎么办呢,转化为代码如下: import java.util.arraylist:← import jaya.util.list:← public class boss{← public void commandchecknumber (teamleader teamleader){ list<course> list = new arraylist<course2o: for (int=0;i<200:i++){ list. add(new course(): teamleader.checknumberofcourses(list); import jave.util.list:e public class teamleader() public void checknumberofcourses(list list){ syatem,out.println("总有课程"+1i=t,size()); public class course( 这样写的代码就是违(400点数解答 | 2024-10-10 16:28:11)158
- <!doctype html> <html lang="en"> <head> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>task list</title> <style> .task-list { list-style-type: none; padding: 0; } .task-list li { margin-bottom: 10px; cursor: pointer; } .task-list li.completed { text-decoration: line-through; color: #888; } </style> </head> <body> <h2>task list</h2> <ul id="tasklist" class="task-list"> <!-- 这里将动态生成任务列表 --> </ul> <script>(185点数解答 | 2025-01-01 17:54:37)142
- #include "videoplayer.h" #include "log.h" #pragma warning(disable: 4996) //buffer: static int audio_len = 0; static uint8* audio_pos; void videoplayer::audiocallback(void* userdata, uint8_t* stream, int len) { sdl_memset(stream, 0, len); if (audio_len <= 0) return; len = (len > audio_len ? audio_len : len); /* mix as much data as possible */ sdl_mixaudio(stream, audio_pos, len, sdl_mix_maxvolume); audio_pos += len; audio_len -= len; } videoplayer::videop(549点数解答 | 2024-08-08 15:59:25)199
- #include<iostream> #include<complex.h> #include <complex> #include <math.h> using namespace std; #define pi 3.14159265358979323846 int main() { file* stream; stream = fopen("4000-red.raw","rb"); unsigned char* image = (unsigned char*)malloc(4000 * 4000 * sizeof(unsigned char)); fread(image,4000*4000,sizeof(unsigned char),stream); unsigned char* image2 = (unsigned char*)malloc(4000 * 4000 * sizeof(unsigned char)); unsigned char* image3 = (unsigned char*)malloc(4000 * 4000 * sizeof(unsigned(413点数解答 | 2024-11-02 18:16:35)190
- 下面代码修改 繁体字编码 // 验证人物名字是否合法的函数 const char* ccreaterolemanager::verifynamevalidity(const char* name) { dword i = 0; while (name[i] != 0 && i<strlen(name) && i<12) { byte a = name[i]; if (a<0x80)//asc码 { if (a == '*') return "名称内包含遮蔽字符表中相关字符:该用户名不可用!"; if (!((a >= '0' && a <= '9') || (a >= 'a' && a <= 'z') || (a >= 'a' && a <= 'z'))) return "有非法字符:仅可使用汉字,数字"; if ((a >= 'a' && a <= 'z') || (a >= 'a' && a <= 'z')) return "有非法字符:仅可使用汉字,数字"; } else//汉字 { if (!(i(325点数解答 | 2024-10-21 18:57:01)158
- 编写一个函数,该函数可以将一个对象的所有属性值转换为字符串类型,包括嵌套的对象属性。如果属 性值已经是字符串,则保持不变。要求使用递归方式实现。 输入:对象 { a: 1, b: { c: 2, d: '3' }, e: [4, 5, 6] } 输出:对象 { a: "1", b: { c: "2", d: "3" }, e: ["4", "5", "6"] }(143点数解答 | 2024-11-08 10:25:12)259
- 编写一个函数,该函数可以将一个对象的所有属性值转换为字符串类型,包括嵌套的对象属性。如果属性值已经是字符串,则保持不变。要求使用递归方式实现。 输入:对象 { a: 1, b: { c: 2, d: '3' }, e: [4, 5, 6] } 输出:对象 { a: "1", b: { c: "2", d: "3" }, e: ["4", "5", "6"] }(142点数解答 | 2024-11-11 21:06:15)153
- 编写一个函数,该函数可以将一个对象的所有属性值转换为字符串类型,包括嵌套的对象属性。如果属性值已经是字符串,则保持不变。要求使用递归方式实现。 输入:对象 { a: 1, b: { c: 2, d: '3' }, e: [4, 5, 6] } 输出:对象 { a: "1", b: { c: "2", d: "3" }, e: ["4", "5", "6"] }(467点数解答 | 2024-11-12 09:07:17)158
- ```cpp #include <iostream> using namespace std; struct node { int data; node* link; node(int x) : data(x), link(null) {} }; // 查找最大节点及其前一个节点 void findmaxandprev(node* list, node*& maxnode, node*& prevmax) { node* curr = list; maxnode = list; prevmax = null; node* prev = null; while (curr!= null) { if (curr->data > maxnode->data) { maxnode = curr; prevmax = prev; } prev = curr; curr = curr->link; } } // 将最大节点移到链表末尾 void movemaxtoend(node*& list) { node* maxnode = null; node* prevmax = null;(549点数解答 | 2024-10-14 22:55:13)195
- 编写一个爬虫实现深度优先爬虫,爬取的网站为 www.baidu.com。使其输出预期为:Add the seeds url ['http://www.baidu.com'] to the unvisited url list Pop out one url "http://www.baidu.com" from unvisited url list Get 10 new links Visited url count: 1 Visited deepth: 1 10 unvisited links: Pop out one url "http://news.baidu.com" from unvisited url list Get 52 new links Visited url count: 2 Visited deepth: 2 Pop out one url "http://www.hao123.com" from unvisited url list Get 311 new links Visited url count: 3 Visited deepth: 2 Pop out(2142点数解答 | 2025-05-13 15:54:49)162
- #include <iostream> #include<cstring> using namespace std; class vehicle{ public: void run(); string getname(); vehicle(string name); string name; }; vehicle::vehicle(string name){ this->name = name; } void vehicle::run(){ cout<<"出发"<<endl; } string vehicle::getname(){ return name; } class car:public vehicle{ public: void break(); void display(); car(int seats,string color,string type,int power,string name); en(65点数解答 | 2024-05-26 17:01:16)246