Solved ISC 2013 Computer Science Practical Paper Programs

Three BlueJ programs in ISC 2013 Computer Science practical examination are as follows: Solution of the practical paper programs are posted here.

Question number 1:

An ISBN (International Standard Book Number) is a ten digit code which uniquely identifies a book.

The first nine digits represent the group, publisher and title of the book and the last digit is used to check whether ISBN is correct or not.

Each of the first none digits of the code can take a value between 0 to 9. Sometimes it is necessary to make the last digit equal to ten. This is done by writing the last digit of the code as X.

To verify an ISBN, calculate 10 times the first digit, plus 9 times the second digit, plus 8 times the third digit and so on until we add 1 time the last digit. If the final number leaves no remainder while divided by 11, the code is a valid ISBN

For example:

0201103311=10*0+9*2+8*0+7*1+6*1+5*0+4*3+3*3+2*1+1*1=55

This is a valid ISBN

007462542X=10*0+9*0+8*7+7*4+6*6+5*2+4*5+3*4+2*2+1*10=176

Similarly 0112112425 is not a valid ISBN.

Sample input-output:

Input code: 0201530821

Output: Sum=99

Leaves no remainder – valid ISBN

Input code: 356680324

Output: Sum=invalid input

Input code: 0231428031

Output: Sum=122

Leaves remainder – invalid ISBN

For Solution: CLICK HERE

Question number 2:

Related Post:  BlueJ Programs on String/Sentence

Write a program to declare a square matrix A[][] of order (MXN) where ‘M’ is the number of rows and the number of columns. ‘M’ should be greater than 2 and less than 20. Allow user to enter integers into this matrix. Display appropriate error message for an invalid input. Perform the following tasks.

1.    Display the input matrix

2.    Create a mirror image of the inputted matrix.

3.    Display the mirror image matrix

Sample:

Input: M=3

4  16  12

8   2  14

6   1   3

Output:

Original matrix

4  16  12

8   2  14

6   1   3

Mirror image matrix:

12  16  4

14  2    8

3   1    6

Sample 2:

Input M=22

Output: Size out of range

For Solution: CLICK HERE

Question number 3:

A palindrome is a word that may be read the same in either direction.

Accept a sentence in upper case which is terminated by either ‘.’,’,’, ‘?’, ‘!’. Each word in the sentence is separated by a blank space.

Perform the following tasks:

1.    Display the count of palindromic words in the sentence

2.    Display the palindromic words in the sentence.

Example 1:

Input: MOM AND DAD ARE COMING AT NOON.

Output: MOM DAD NOON

Number of palindromic words: 3

Example 2:

Input: HOW ARE YOU?

Output: No palindromic words

For Solution: CLICK HERE

For the complete solution along with variable description and algorithm: CLICK HERE

2010 To 2018 Complete 9 Years Papers With Solutions: CLICK HERE