会python真的可以为所欲为0(回)
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845天前
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849天前import java.util.*; |
import java.text.DateFormat; |
import java.text.ParseException; |
import java.text.SimpleDateFormat; |
public class Main { |
public static void main(String[] args) throws ParseException |
{ |
Scanner scan = new Scanner(System.in); |
int num = scan.nextInt(); |
List<Student> slist = new ArrayList<Student>(); |
for(int i = 0; i < num; i++ ) |
{ |
int no = scan.nextInt(); |
String name = scan.next(); |
int score = scan.nextInt(); |
Student s = new Student(no,name,score); |
slist.add(s); |
} |
num = scan.nextInt(); |
|
for(int i = 0; i < num; i++ ) |
{ |
String operate = scan.next(); |
if(operate.equals("add"))//要用equals，不能用== |
{ |
int no = scan.nextInt(); |
String name = scan.next(); |
int score = scan.nextInt(); |
Student s = new Student(no,name,score); |
slist.add(s); |
} |
else if(operate.equals("delete")) |
{ |
int no = scan.nextInt(); |
for( int j = 0; j < slist.size(); j++) |
{ |
if(slist.get(j).getno() == no) |
slist.remove(j); |
} |
} |
else if(operate.equals("set")) |
{ |
int no = scan.nextInt(); |
int score = scan.nextInt(); |
for( int j = 0; j < slist.size(); j++) |
{ |
if(slist.get(j).getno() == no) |
slist.get(j).setscore(score); |
} |
} |
} |
for( int j = 0;j < slist.size();j++) |
System.out.println(slist.get(j).toString()); |
} |
} |
class Student |
{ |
private int no; |
private String name; |
private int score; |
public int getno() |
{ |
return no; |
} |
public void setscore(int a) |
{ |
score = a; |
} |
public Student(int a, String b, int c) |
{ |
no = a; |
name = b; |
score = c; |
} |
public String toString() |
{ |
return "no:"+no+" name:"+name+" score:"+score; |
} |
} |
