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ICSE Class 12 Computer Science Question 2 of 3

Solved 2017 Practical Paper ISC Computer Science — Question 2

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Question

Question 2

The result of a quiz competition is to be prepared as follows:

The quiz has five questions with four multiple choices (A, B, C, D), with each question carrying 1 mark for the correct answer. Design a program to accept the number of participants N such that N must be greater than 3 and less than 11. Create a double-dimensional array of size (Nx5) to store the answers of each participant row-wise. Calculate the marks for each participant by matching the correct answer stored in a single-dimensional array of size 5. Display the scores for each participant and also the participant(s) having the highest score.

Example: If the value of N = 4, then the array would be:

 Q1Q2Q3Q4Q5
Participant 1ABBCA
Participant 2DADCB
Participant 3AABAC
Participant 4DCCAB
Key to the question:DCCBA

Note: Array entries are line fed (i.e. one entry per line)

Test your program for the following data and some random data.

Example 1

INPUT:
N = 5
Participant 1 D A B C C
Participant 2 A A D C B
Participant 3 B A C D B
Participant 4 D A D C B
Participant 5 B C A D D
Key: B C D A A

OUTPUT:
Scores:
Participant 1 = 0
Participant 2 = 1
Participant 3 = 1
Participant 4 = 1
Participant 5 = 2
Highest Score:
Participant 5

Example 2

INPUT:
N = 4
Participant 1 A C C B D
Participant 2 B C A A C
Participant 3 B C B A A
Participant 4 C C D D B
Key: A C D B B

OUTPUT:
Scores:
Participant 1 = 3
Participant 2 = 1
Participant 3 = 1
Participant 4 = 3
Highest Score:
Participant 1
Participant 4

Example 3

INPUT:
N = 12

OUTPUT:
INPUT SIZE OUT OF RANGE.

Solution
import java.util.Scanner;

public class QuizCompetition
{
    public static void main(String args[]) {
        Scanner in = new Scanner(System.in);
        System.out.print("Enter the Number of Participants (N): ");
        int n = in.nextInt();

        if (n <= 3 || n >= 11) {
            System.out.println("INPUT SIZE OUT OF RANGE.");
            return;
        }

        char answers[][] = new char[n][5];
        char key[] = new char[5];

        System.out.println("Enter answers of participants");
        for (int i = 0; i < n; i++) {
            System.out.println("Participant " + (i+1));
            for (int j = 0; j < 5; j++) {
                answers[i][j] = in.next().charAt(0);
            }
        }

        System.out.println("Enter Answer Key:");
        for (int i = 0; i < 5; i++) {
            key[i] = in.next().charAt(0);
        }
        
        int hScore = 0;
        int score[] = new int[n];
        
        System.out.println("Scores:");
        for (int i = 0; i < n; i++) {
            for (int j = 0; j < 5; j++) {
                if (answers[i][j] == key[j]) {
                    score[i]++;
                }
            }
            
            if (score[i] > hScore) {
                hScore = score[i];
            }
            
            System.out.println("Participant " + (i+1) + " = " + score[i]);
        }
        
        System.out.println("Highest Score:");
        for (int i = 0; i < n; i++) {
            if (score[i] == hScore) {
                System.out.println("Participant " + (i+1));
            }
        }
    }
}
Output
BlueJ output of QuizCompetition.java
BlueJ output of QuizCompetition.java
BlueJ output of QuizCompetition.java
Answer

import
java.util.Scanner
;
public
class
QuizCompetition
{
public
static
void
main
(
String
args
[]) {
Scanner
in
=
new
Scanner
(
System
.
in);
System
.
out
.
print(
"
Enter the Number of Participants (N):
"
);
int
n
=
in
.
nextInt();
if
(n
<=
3
||
n
>=
11
) {
System
.
out
.
println(
"
INPUT SIZE OUT OF RANGE.
"
);
return
;
}
char
answers[][]
=
new
char
[n][
5
];
char
key[]
=
new
char
[
5
];
System
.
out
.
println(
"
Enter answers of participants
"
);
for
(
int
i
=
0
; i
<
n; i
++
) {
System
.
out
.
println(
"
Participant
"
+
(i
+
1
));
for
(
int
j
=
0
; j
<
5
; j
++
) {
answers[i][j]
=
in
.
next()
.
charAt(
0
);
}
}
System
.
out
.
println(
"
Enter Answer Key:
"
);
for
(
int
i
=
0
; i
<
5
; i
++
) {
key[i]
=
in
.
next()
.
charAt(
0
);
}
int
hScore
=
0
;
int
score[]
=
new
int
[n];
System
.
out
.
println(
"
Scores:
"
);
for
(
int
i
=
0
; i
<
n; i
++
) {
for
(
int
j
=
0
; j
<
5
; j
++
) {
if
(answers[i][j]
==
key[j]) {
score[i]
++
;
}
}
if
(score[i]
>
hScore) {
hScore
=
score[i];
}
System
.
out
.
println(
"
Participant
"
+
(i
+
1
)
+
"
=
"
+
score[i]);
}
System
.
out
.
println(
"
Highest Score:
"
);
for
(
int
i
=
0
; i
<
n; i
++
) {
if
(score[i]
==
hScore) {
System
.
out
.
println(
"
Participant
"
+
(i
+
1
));
}
}
}
}
Output