ISC Computer practical programs on 2006

Program Number 1

Write a program which inputs a positive natural number N and prints the possible consecutive number combinations, which when added give N. Test your program for the following data and some random data..

A positive natural number, (for e.g 27) can be represented as follows-
2+3+4+5+6+7
8+9+10
13+14
Every row represents a combination of consecutive natural numbers, which add up to 27.

SAMPLE DATA
INPUT
N = 9
OUTPUT
4 5
2 3 4
INPUT
N = 15
OUTPUT
7 8
1 2 3 4 5
4 5 6

Codes of this Program on possible consecutive numbers already posted in this blog.

Program on Merging two sorted string arrays

Write a program that inputs the names of people in to different arrays, A and B. Array a has N number of names while array B has M number of names, with no duplicates in either of them. Merge arrays A and B in to a single array C, such that the resulting array is stored alphabetically.
Display all the three arrays, A, B and C, stored alphabetically.
Test your program for the given data and some random data.

SAMPLE DATA
INPUT
Enter number of names in Array A, N = 2
Enter number of names in Array A, B = 2
First array: (A)
Suman
Anil
Second array: (B)
Usha
Sachin
John
OUTPUT
Stored Merged array: (C)
Anil
John
Sachin
Suman
Usha
Stored First array: (A)
Anil
Suman
Stored second array: (B)
John
Sachin
Usha

Codes of this program

import java.io.*;

class SortedNames

{

BufferedReader br=new BufferedReader(new InputStreamReader(System.in));

String str1[],str2[],str3[];

int n,m;

String s;

int i,j;

public void take ()throws Exception

{

System.out.println("Number of Names for first array:");

n=Integer.parseInt(br.readLine());

System.out.println("Number of Names for second array:");

m=Integer.parseInt(br.readLine());

str1=new String[n];

str2=new String[m];

str3=new String[n+m];

System.out.println("Names for 1st array:");

for(i=0;i< n;i++)

{

System.out.println("Name:");

str1[i]=br.readLine().trim();

}

System.out.println("Names for 2nd array:");

for(i=0;i< m;i++)

{

System.out.println("Name:");

str2[i]=br.readLine().trim();

}

sort();

merge();

display();

}

private void sort()

{

int flag;

for(i=0;i< n;i++)

{

flag=0;

 for(j=0;j< n-i-1;j++)

 {

 if(str1[j].compareTo(str1[j+1]) >0)

 {

  s=str1[j];

  str1[j]=str1[j+1];

  str1[j+1]=s;

  flag=1;

  }

  }

  if(flag==0)

  break;

  }

for(i=0;i< m;i++)

{

flag=0;

 for(j=0;j< m-i-1;j++)

 {

 if(str2[j].compareTo(str2[j+1]) >0)

 {

  s=str2[j];

  str2[j]=str2[j+1];

  str2[j+1]=s;

  flag=1;

  }

  }

  if(flag==0)

  break;

  }

}

private void merge()

{

int x=0;

 i=0;

 j=0;

 while(i!=n && j!=m)

 {

  if(str1[i].compareTo(str2[j])< =0)

     str3[x++]=str1[i++];

  else

     str3[x++]=str2[j++];

 }

 if(i==n)

 {

  for(;j< m;j++)

  str3[x++]=str2[j];

 }

 else

 {

  for(;i< n;i++)

  str3[x++]=str1[i];

 }

 }

  private void display()

 {

  System.out.println("\nSorted Merged Names\n");

  for(i=0;i< m+n;i++)

  System.out.println(str3[i]);

  System.out.println("\n*********\n");

  System.out.println("\nFirst array names\n");

  for(i=0;i< n;i++)

  System.out.println(str1[i]);

  System.out.println("\n*********\n");

  System.out.println("\nSecond array names\n");

  for(i=0;i< m;i++)

  System.out.println(str2[i]);

  }

 public static void main(String args[])throws Exception

{

SortedNames obj=new SortedNames();

obj.take();

}

}

Program Number 3

ISC 2019 English Paper II Suggestions (New Syllabus): CLICK HERE

A new advanced Operating System, incorporating the latest hi-tech features has been designed by Opera Computer System. The task of generating copy protection codes to prevent software piracy has been entrusted to the Security Department. The security department has decided to have codes containing a jumbled combination of alternate uppercase letters of the alphabet starting from A upto K (namely among A,C,E,G,I,K). The codes may or may not be in the consecutive series of alphabets.

Develop a program to input a code and its length. At the first instance of an error display “Invalid!” stating the appropriate reason. In case of no error, display the message “Valid!”

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

SAMPLE DATA
INPUT
N = 4
ABCE
OUTPUT
Invalid! Only alternate letters permitted!
INPUT
N = 4
AcIK
OUTPUT
Invalid! Only upper case letters permitted!
INPUT
N = 4
AAKE
OUTPUT
Invalid! Repetition of characters not permitted!
INPUT
N = 7
OUTPUT
Error! Length of string should not exceed 6 characters!
INPUT
N = 4
AEGIK
OUTPUT
Invalid! String length not the same as specified!
INPUT
N = 3
ACE
OUTPUT
Valid!
INPUT
N = 5
GEAIK
OUTPUT
Valid!

To view the codes of this program follow this link.


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