How can I score 99-100 in ISC Computer Science Paper (including Practical)?

How can I score 99-100 in ISC Computer Science Paper (including Practical)?

 I got full marks in the ISC 2018 Computer Science exam, and here is how I went about with my preparation.

I didn't really read a bunch of reference books for learning the subject. What was taught in my class was enough to develop a good understanding of the concepts. However, I did consult a book (our school textbook - the one by Sumita Arora) to search for additional concepts that may be left to learn. Also, the book was a useful reference for definitions, advantages and disadvantages, and other things that could be asked as objective questions (like "What is a function?", "What are the advantages of functions?", "What are data types? how many types of java progrms? What is the size and range of the various data types in Java?", "What are the differences between if and switch statements?"). Hence for me the textbook was a must for preparing what to write for the theory questions.

For the practical exam, practise compiling and running programs at home, again in a time-bound manner, so that you are gain confidence in it. Solve the previous years' papers in a time-bound manner. I followed Frank's Past Papers. Practise programming thoroughly, devoting more time to it than theory. Logical thinking comes with practice. Cover all programming topics in the syllabus (at least, if not beyond it) and go through the ISC programming questions of the past 5 to 10 years.

For previous year Papers You can go through my Blogs i have solved more than 10 years Paper.

Be prepared for objective-type questions on programming that are asked in the viva. Usually the viva questions are related to the program that you choose to answer in the exam.

Study hard and be confident. Wish you all the best!! :)

ISC COMPUTER PRACTICAL - 2021 - QUESTION 3 (Matrix Program)

ISC 2021 Computer Practical Question 3 –  Matrix Program

-WRITTEN BY CODERGURUJI

 

  

Solution :

import java.util.*;

class Q3

{

public static void main(String args[])

{  int p=0,s=0,s1=0;

Scanner sc=new Scanner(System.in);

System.out.println("enter m*n");

int m=sc.nextInt();

int n=sc.nextInt();

int a[][]=new int[m][n];

int b[]=new int[1000];

int c[][]=new int[m][n];

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

{

for(int j=0;j<n;j++)

{

a[i][j]=sc.nextInt();

}

}

System.out.println("ORIGINAL MATRIX");

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

{

for(int j=0;j<n;j++)

{

if((i==0)||(i==m-1)||(j==0)||(j==n-1))

   {

     s=s+a[i][j];

 }

System.out.print(a[i][j]+" ");

}

System.out.println();

}

System.out.println("SUM OF THE BOUNDARY ELEMENTS(UNSORTED)= "+s);

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

{

for(int j=0;j<n;j++)

{

b[p]=a[i][j];

p++;

}

}

for(int i=0;i<p;i++)

{

for(int j=0;j<p-i-1;j++)

{

if(b[j]<b[j+1])

{

int temp=b[j];

b[j]=b[j+1];

b[j+1]=temp;

}

}

}

p=0;

System.out.println("SORTED MATRIX");

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

{

for(int j=0;j<n;j++)

{

c[i][j]=b[p];

System.out.print(b[p]+" ");

p++;

if((i==0)||(i==m-1)||(j==0)||(j==n-1))

   {

     s1=s1+c[i][j];

   }

}

System.out.println();

}

System.out.println("SUM OF THE BOUNDARY ELEMENTS(SORTED)= "+s1);

}

}

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ISC COMPUTER PRACTICAL - 2021 - QUESTION 2 (String Program)

 

ISC 2021 Computer Practical Question 2 –  String Program.

-WRITTEN BY CODERGURUJI

      

     

   Solution :

import java.util.*;

class Q2

{

public static void main(String args[])

{  String x="";

int h=0,z=0;

Scanner sc= new Scanner(System.in);

System.out.println("Enter para");

String n=sc.nextLine();

String a[]=new String[1000];

int l=n.length();

for(int i=0;i<l;i++)

{

char ch=n.charAt(i);

if(ch=='.'||ch=='?'||ch=='!')

{

z++;

}

}

if(z==2)

{

for(int i=0;i<l;i++)

{

char ch=n.charAt(i);

if(ch=='.'||ch=='?'||ch=='!')

{

String p=(n.substring(0,i+1));

String m=(n.substring(i+2,l));

n=p+m;

System.out.println(n.substring(0,i+1));

System.out.println(n.substring(i+1));

break;

}

}

for(int i=0;i<l-1;i++)

{

char ch=n.charAt(i);

if(ch!='.'&&ch!='?'&&ch!='!'&&ch!=' ')

{

x=x+ch;

}

else

{

a[h]=x;

h++;

x="";

}

}

System.out.println("COMMON WORDS  FREQUENCY");

for(int i=0;i<h;i++)

{

int c=1;

for(int j=i+1;j<h;j++)

{

if(a[i].equals(a[j]))

{

for(int k=j;k<h-1;k++)

a[k]=a[k+1];

h--;

c++;

}

}

if(c>1)

System.out.println(a[i]+"\t\t"+c);

}

}

else

{

System.out.print("INVALID INPUT");

}

}

}

----------------------------end--------------------------------------------------

ISC COMPUTER PRACTICAL - 2021 - QUESTION 1 (Fascinating Number Program)

ISC 2021 Computer Practical Question 1 – Fascinating Number Program

-WRITTEN BY CODERGURUJI

     Solution :

import java.util.*;

class Fascinating

{

public static void main(String agrs[])

{

int f=0;

Scanner sc=new Scanner(System.in);

System.out.println("Enter the value for m and n: ");

int m=sc.nextInt();

int n= sc.nextInt();

if(m>n||m<99||n<99||m>10000||n>10000)

{

System.out.println("INVALID INPUT");

}

else

{

System.out.print("THE FASCINATING NUMBERS ARE:");

   for(int i=m;i<=n;i++)

   {

   int n2 = i*2;

   int n3 = i*3;

   String s = "" + i + n2 + n3;

   int l = s.length();

   char ch,ch1;

   int j,c=0;

   

   for(ch1='1';ch1<='9';ch1++)

        {

            c=0;

            for(j=0;j<l;j++)

            {

                ch = s.charAt(j);

                if(ch == ch1)

                    c++;

            }

            if(c!=1)

                break;

        }

        

        if(ch1 > '9')

        {

           f++;

           System.out.print(i+" ");

        }      

}

if(f>0) 

{

System.out.println();

System.out.print("FREQUENCY OF FASCINATING NUMBERS IS:"+f);

}

if(f==0)

{

System.out.print("NIL");

System.out.println();

System.out.print("FREQUENCY OF FASCINATING NUMBERS IS:"+f);

}

}

}

}

----------------------------end----------------------------