CodePudding user response:

CodePudding user response:

 
import java.util.*; 
The import static Java. Util. Stream. Collectors. *; 

Public class Solution {
Private static String [] levelNames={" below 60 points ", "60-69", "70-79", "80-89", "90-99", "100"}; 
Private static String averageName="average"; 
Private static int endFlag=1; 
Private static Scanner Scanner=new Scanner (System. In); 

Public static void main (String [] args) {
List ScoresList=getScores (); 
ScoresList. Stream (). Collect (groupingBy (T: : getLevelName, counting ())) 
The forEach ((k, v) - & gt; System. Out. Println (the String. Format (" % s: % d ", k, v))); 
Double averageScore=scoresList. Stream (). Collect (summarizingInt (t - & gt; T)). GetAverage (); 
System. Out. Println (the String. Format (" % s: % 2 f, "averageName, averageScore)); 
} 

Public static String getLevelName (Integer score) {
Score/=10; 
Return levelNames [score & lt; 6? 0: score - 5]; 
} 

Public static List GetScores () {
List ScoreList=new ArrayList<> (a); 
Int score; 
While ((score=scanner. NextInt ())!={endFlag) 
If (score & lt; 0 | | score & gt; 100) {
Throw new IllegalArgumentException (" illegal input!" ); 
} 
ScoreList. Add (score); 
} 
Return scoreList; 
} 
} 

CodePudding user response:

 
Public static void main (String [] args) {
//TODO Auto - generated method stub 
Scanner sc=new Scanner (System. In); 
Int a=0, b=0, c=0, d=0, e=0, f=0, sum=0, I; 
While ((I=sc. NextInt ())!=1) {
Sum=sum + I; 
If (i<60) {
a++; 
} else if (i<{
=69)b++; 
} else if (i<{
=79)c++; 
} else if (i<{
=89)d++; 
} else if (i<{
=99)E++; 
} else {
F++; 
} 
} 
System. The out. Println (under "60 minutes" + a + "60-69 people, with an" a + b + "with" 70-79 + c + "with" 80-89 + d + "with" 90-99 + e + "100 points" + e + "person"); 
System. The out. Println (" average scores for "+ sum/(a + b + c + d + e + f)); 

}