实训报告2

package Demo;
import java.util.*;
public class Demo1 {
public static void main(String[] args) {
// TODO Auto-generated method stub
Scanner shuzu=new Scanner(System.in);
int max=0;
int min=0;
int score[]=new int [4];
for(int i=0;i<4;i++){
score[i]=shuzu.nextInt();
}
for(int i=0;i<4;i++){
System.out.print(score[i]+" ");
}
System.out.println("\n顺序打印：");
for(int i=0;i<4;i++){
System.out.println("score="+score[i]);
}
System.out.println("逆序打印：");
for(int i=3;i>=0;i--){
System.out.println("score="+score[i]);
}
min=score[0]; max=score[0];
for(int i=1;i<4;i++){
if(score[i]>score[i-1]){
max=score[i];
if(min>score[i-1])
min=score[i-1];
}else{
min=score[i];
max=score[i-1];
}
}
System.out.println("最高分："+max+"\n"+"最低分:"+min);
}
}

package Demo;
import java.util.*;
public class Demo2 {

/**
 * @param args
 */
public static void main(String[] args) {
	// TODO Auto-generated method stub
	int []sum={1,2,10,4,5,6,7,8,923,10};
	int b=0;
	for(int i=1;i<10;i++){
		if(sum[i]<sum[i-1]){
			b=sum[i];
			sum[i-1]=sum[i];
			sum[i-1]=b;
		}
	}
	for(int j=0;j<10;j++){
		System.out.println("sum["+j+"]="+sum[j]);
		
	}
}

}

package Demo;
import java.util.*;
public class Demo3 {

public static void main(String[] args) {
		Scanner shuru=new Scanner(System.in);
	    int stu[]=new int[10];
		for(int j=0;j<10;j++){
			stu[j]=shuru.nextInt();
		}
		int no=0;
		for (int i=0;i<10;i++){
			if(stu[i]<60)
				no++;
		}
		System.out.println("不及格学生人数为："+no);
}

}