int[] cakes = Arrays.stream(sc.nextLine( ).split(" ," )) .mapToInt(Integer: :parseInt).toArray();快捷键

时间: 2024-04-25 17:23:19 浏览: 9
引用\[3\]中给出了一个示例,其中使用了Java语言的快捷键。具体来说,这个快捷键是用来将输入的字符串按照逗号分隔,并将每个分隔的部分转换为整数数组的形式。在Java中,可以使用以下代码实现这个功能: ```java int\[\] cakes = Arrays.stream(sc.nextLine().split(",")) .mapToInt(Integer::parseInt) .toArray(); ``` 这段代码首先使用`sc.nextLine()`读取一行输入,然后使用`split(",")`将字符串按照逗号分隔成多个部分,并返回一个字符串数组。接下来,使用`mapToInt(Integer::parseInt)`将每个字符串转换为整数,并返回一个`IntStream`。最后,使用`toArray()`将`IntStream`转换为整数数组。 请注意,这个快捷键是使用Java语言实现的,其他编程语言可能有不同的实现方式。 #### 引用[.reference_title] - *1* *3* [2023华为od机试统一考试B卷【生日礼物】Java 实现](https://blog.csdn.net/misayaaaaa/article/details/131185761)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v91^control_2,239^v3^insert_chatgpt"}} ] [.reference_item] - *2* [华为OD机试 - 生日礼物(Java)](https://blog.csdn.net/qq_34143141/article/details/131466177)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v91^control_2,239^v3^insert_chatgpt"}} ] [.reference_item] [ .reference_list ]

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import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; import java.util.ArrayList; import java.util.Arrays; import java.util.Collection; import java.util.Collections; import java.util.LinkedList; import java.util.List; import java.util.Scanner; public class Main{ public static void main(String[] args) throws IOException { BufferedReader in=new BufferedReader(new InputStreamReader(System.in)); int n; double need; double sum=0; String s[]=in.readLine().split(" "); n=Integer.parseInt(s[0]); need=Double.parseDouble(s[1]); String amount[]=in.readLine().split(" "); String price[]=in.readLine().split(" "); ArrayList<Mooncake> cakes=new ArrayList<Mooncake>(); for(int i=0;i<n;i++){ Mooncake cake=new Mooncake(); cake.setAmount(Double.parseDouble(amount[i])); cake.setSales(Double.parseDouble(price[i])); cake.setValues(Double.parseDouble(price[i])/Double.parseDouble(amount[i])); cakes.add(cake); } Collections.sort(cakes); for(Mooncake c: cakes){ if(need>=c.amount){ need=need-c.amount; sum+=c.amount*c.values; } else{ sum+=need*c.values; need=0; } if(need==0){ break; } } System.out.printf("%.2f",sum); } static class Mooncake implements Comparable<Mooncake>{ double amount; double sales; double values; public double getAmount() { return amount; } public void setAmount(double amount) { this.amount = amount; } public double getSales() { return sales; } public void setSales(double sales) { this.sales = sales; } public double getValues() { return values; } public void setValues(double values) { this.values = values; } @Override public int compareTo(Mooncake arg0) { // TODO Auto-generated method stub return this.values>arg0.values?-1:1; } } }转c++

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