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Solved 2020 ICSE Computer Science Paper

Class 10 - ICSE Computer Science Solved Papers

Method Overloading - ICSE 2020 Computer Science

Question 7
Design a class to overload a method number() as follows:


(i) void number(int num, int d) – to count and display the frequency of a digit in a number.
Example:
num = 2565685
d = 5
Frequency of digit 5 = 3


(ii) void number(int n) – to find and display the sum of even digits of a number.
Example:
n = 29865
Sum of even digits = 16


Write a main() method to create an object and invoke the above methods.

Java 

class Overload{
    public void number(int num, int d){
        int f = 0;
        if(num == 0 && d == 0)
            f = 1;
        for(int i = num; i != 0; i /= 10){
            if(i % 10 == d)
                f++;
        }
        System.out.println("Frequency of digit " + d + " = " + f);
    }
    public void number(int n){
        int sum = 0;
        for(int i = n; i != 0; i /= 10){
            int d = i % 10;
            if(d % 2 == 0)
                sum += d;
        }
        System.out.println("Sum of even digits = " + sum);
    }
    public static void main(String[] args){
        Overload obj = new Overload();
        obj.number(2565685, 5);
        obj.number(29865);
    }
}

Output

 
 OUTPUT : 
Frequency of digit 5 = 3
Sum of even digits = 16
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