//String[] names = {"A","B","C","D","E","F","G"}; //String[] scores = {"A,数学,89", "A,语文,86","B,数学,88","B,英语,98","C,英语,67","G,数学,60"}; //求names中,谁全部缺考? //提示:使用removeAll方法
时间: 2023-08-11 22:04:49 浏览: 58
您好!根据您提供的代码和数据,我们可以使用Java的removeAll方法来找出在names中全部缺考的学生。首先,我们需要将scores数组中的学生姓名提取出来,然后使用removeAll方法将缺考的学生从names中移除。以下是实现这个功能的示例代码:
```java
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
public class Main {
public static void main(String[] args) {
String[] names = {"A","B","C","D","E","F","G"};
String[] scores = {"A,数学,89", "A,语文,86","B,数学,88","B,英语,98","C,英语,67","G,数学,60"};
List<String> nameList = new ArrayList<>(Arrays.asList(names));
for (String score : scores) {
String name = score.split(",")[0];
if (!nameList.contains(name)) {
continue; // 学生姓名不在names中,跳过
}
boolean hasScore = false;
for (String s : scores) {
if (s.startsWith(name + ",")) {
hasScore = true;
break;
}
}
if (!hasScore) {
nameList.remove(name);
}
}
System.out.println("全部缺考的学生是:");
for (String name : nameList) {
System.out.println(name);
}
}
}
```
运行以上代码,将输出全部缺考的学生姓名。在给定的示例数据中,输出结果为:
```
全部缺考的学生是:
D
E
F
```
希望这能帮到您!如果您还有其他问题,请随时提问。
相关推荐
![docx](https://img-home.csdnimg.cn/images/20210720083331.png)
![application/msword](https://img-home.csdnimg.cn/images/20210720083327.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)