Database System Concepts
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Chapter 30 Exercise 30.3 (Analyze scores) Rewrite Programming Exercise 7.4 using streams.

package Exercise_30_3;

import java.util.Scanner;

public class Original {
publicstaticvoidmain(String[] args) {
try (Scannerinput = newScanner(System.in)) {
System.out.print("Enter scores: (negative number signifies end): ");
int[] scores = newint[100];
intnum;
intnumberOfScores;
intaverage;
numberOfScores = average = 0;
for (inti = 0; i < 100; i++) {
num = input.nextInt();
if (num < 0){
break;
}
scores[i] = num;
average += num;
numberOfScores++;
}
average /= numberOfScores;
intaboveOrEqual;
intbelow;
aboveOrEqual = below = 0;
for (inti = 0; i < numberOfScores; i++) {
if (scores[i] >= average){
aboveOrEqual++;
}
else{
below++;
}
}
System.out.println("\nAverage of scores: " + average);
System.out.println("Number of scores above or equal to average: " + aboveOrEqual);
System.out.println("Number of scores below average: " + below);
}
}
}
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