作业三 4.6

4：

public class Shuzu4{
public static void main(String[] args){
int score[]={67,89,87,69,90,100};
int sum=0;
int max=0;
int min=0;
max=min=score[0];
for(int i=1;i<score.length;i++){
for(int j=0;j<score.length;j++){
if(score[i]<score[j]){
int temp=score[i];
score[i]=score[j];
score[j]=temp;
}
}
}
for(int i=0;i<score.length;i++){
System.out.print(score[i]+"\t");
sum=sum+score[i];
}
System.out.println("数组的和为:"+sum);
for(int i=0;i<score.length;i++){
if(score[i]>max){
max=score[i];
}
if(score[i]<min){
min=score[i];
}
}
System.out.println("最高成绩:"+max);
System.out.println("最低成绩:"+min);
}

}

 

8：

public class Cishu8{
public static void main(String[] args){
int score[]={1,4,2,5,6,5,1,0,5,4,8,4,7,8,9,0,4,2,7,3,2,7,9,4,2,5,2,9,3,9};
int count1=0,count2=0,count3=0,count4=0,count5=0,count6=0,count7=0,count8=0,count9=0,count10=0;
for(int i=1;i<score.length;i++){
for(int j=0;j<score.length;j++){
if(score[i]<score[j]){
int temp=score[i];
score[i]=score[j];
score[j]=temp;
}
}
}
for(int i=0;i<score.length;i++){
System.out.print(score[i]+"\t");
}
for(int i=0;i<score.length;i++){
if(score[i]==0){
count1++;
}

}
System.out.println("0的次数为:"+count1);
for(int i=0;i<score.length;i++){
if(score[i]==1){
count2++;
}

}
System.out.println("1的次数为:"+count2);
for(int i=0;i<score.length;i++){
if(score[i]==2){
count3++;
}

}
System.out.println("2的次数为:"+count3);
for(int i=0;i<score.length;i++){
if(score[i]==3){
count4++;
}

}
System.out.println("3的次数为:"+count4);
for(int i=0;i<score.length;i++){
if(score[i]==4){
count5++;
}

}
System.out.println("4的次数为:"+count5);
for(int i=0;i<score.length;i++){
if(score[i]==5){
count6++;
}

}
System.out.println("5的次数为:"+count6);
for(int i=0;i<score.length;i++){
if(score[i]==6){
count7++;
}

}
System.out.println("6的次数为:"+count7);
for(int i=0;i<score.length;i++){
if(score[i]==7){
count8++;
}

}
System.out.println("7的次数为:"+count8);
for(int i=0;i<score.length;i++){
if(score[i]==8){
count9++;
}

}
System.out.println("8的次数为:"+count9);
for(int i=0;i<score.length;i++){
if(score[i]==9){
count10++;
}

}
System.out.println("9的次数为:"+count10);
}
}