ICSE Computer Application - Class X - 2023 PYQ

Name the following:

(a) What is an instance of the class called?

(b) The method which has same name as that of the class name.

Consider the given array and answer the questions given below:

int x[ ] = {4, 7, 9, 66, 72, 0, 16};

(a) What is the length of the array?

(b) What is the value in x[4]?

Give the output of the following String class methods:

(a) "COMMENCEMENT".lastIndexOf('M')

(b) "devote".compareTo("DEVOTE")

int n = 4279; int d;
while(n > 0)
{ d = n % 10;
System.out.println(d); 
n = n / 100;
}

int m = 400;
double ch = (m>300) ? (m / 10.0) * 2 : (m / 20.0) - 2;

Give the output of the following Character class methods:

(a) Character.toUpperCase ('a')

(b) Character.isLetterOrDigit('#')

int x = 10;
do
{
x––;
System.out.print(x);
}

Write the value of n after execution:

char ch ='d';
int n = ch + 5;

Define a class to overload the function print as follows:

void print() - to print the following format

1  1  1  1
2  2  2  2
3  3  3  3
4  4  4  4
5  5  5  5

void print(int n) - To check whether the number is a lead number. A lead number is the one whose sum of even digits are equal to sum of odd digits.

e.g. 3669
odd digits sum = 3 + 9 = 12
even digits sum = 6 + 6 = 12
3669 is a lead number.

Define a class to accept a String and print the number of digits, alphabets and special characters in the string.

Example:
S = "KAPILDEV@83"
Output:
Number of digits – 2
Number of Alphabets – 8
Number of Special characters – 1

Define a class to accept values in integer array of size 10. Find sum of one digit number and sum of two digit numbers entered. Display them separately.

Example:
Input: a[ ] = {2, 12, 4, 9, 18, 25, 3, 32, 20, 1}
Output:
Sum of one digit numbers : 2 + 4 + 9 + 3 + 1 = 19
Sum of two digit numbers : 12 + 18 + 25 + 32 + 20 = 107