Q: Question 5Write a program to input and sort the weight of ten people. Sort and display them in descending order using the selection sort technique.

import java.util.Scanner; public class KboatSelectionSort { public static void main(String args[]) { Scanner in = new Scanner(System.in); double weightArr[] = new double[10]; System.out.println("Enter weights of 10 people: "); for (int i = 0; i < 10; i++) { weightArr[i] = in.nextDouble(); } for (int i = 0; i < 9; i++) { int idx = i; for (int j = i + 1; j < 10; j++) { if (weightArr[j] > weightArr[idx]) idx = j; } double t = weightArr[i]; weightArr[i] = weightArr[idx]; weightArr[idx] = t; } System.out.println("Sorted Weights Array:"); for (int i = 0; i < 10; i++) { System.out.print(weightArr[i] + " "); } } }Output

Q: Question 6Write a program to input a number and print whether the number is a special number or not.(A number is said to be a special number, if the sum of the factorial of the digits of the number is same as the original number).Example:145 is a special number, because 1! + 4! + 5! = 1 + 24 + 120 = 145.(Where ! stands for factorial of the number and the factorial value of a number is the product of all integers from 1 to that number, example 5! = 1 * 2 * 3 * 4 * 5 = 120)

import java.util.Scanner; public class KboatSpecialNum { public static int fact(int y) { int f = 1; for (int i = 1; i <= y; i++) { f *= i; } return f; } public static void main(String args[]) { Scanner in = new Scanner(System.in); System.out.print("Enter number: "); int num = in.nextInt(); int t = num; int sum = 0; while (t != 0) { int d = t % 10; sum += fact(d); t /= 10; } if (sum == num) System.out.println(num + " is a special number"); else System.out.println(num + " is not a special number"); } }Output

Q: Question 7Write a program to accept a word and convert it into lower case, if it is in upper case. Display the new word by replacing only the vowels with the letter following it.Sample Input: computerSample Output: cpmpvtfr

import java.util.Scanner; public class KboatVowelReplace { public static void main(String args[]) { Scanner in = new Scanner(System.in); System.out.print("Enter a word: "); String str = in.nextLine(); str = str.toLowerCase(); String newStr = ""; int len = str.length(); for (int i = 0; i < len; i++) { char ch = str.charAt(i); if (str.charAt(i) == 'a' || str.charAt(i) == 'e' || str.charAt(i) == 'i' || str.charAt(i) == 'o' || str.charAt(i) == 'u') { char nextChar = (char)(ch + 1); newStr = newStr + nextChar; } else { newStr = newStr + ch; } } System.out.println(newStr); } }Output

Q: Question 8Design a class to overload a function compare( ) as follows:void compare(int, int) — to compare two integers values and print the greater of the two integers.void compare(char, char) — to compare the numeric value of two characters and print with the higher numeric value.void compare(String, String) — to compare the length of the two strings and print the longer of the two.

import java.util.Scanner; public class KboatCompare { public void compare(int a, int b) { if (a > b) { System.out.println(a); } else { System.out.println(b); } } public void compare(char a, char b) { int x = (int)a; int y = (int)b; if (x > y) { System.out.println(a); } else { System.out.println(b); } } public void compare(String a, String b) { int l1 = a.length(); int l2 = b.length(); if (l1 > l2) { System.out.println(a); } else { System.out.println(b); } } public static void main(String args[]) { Scanner in = new Scanner(System.in); KboatCompare obj = new KboatCompare(); System.out.print("Enter first integer: "); int n1 = in.nextInt(); System.out.print("Enter second integer: "); int n2 = in.nextInt(); obj.compare(n1, n2); System.out.print("Enter first character: "); char c1 = in.next().charAt(0); System.out.print("Enter second character: "); char c2 = in.next().charAt(0); in.nextLine(); obj.compare(c1, c2); System.out.print("Enter first string: "); String s1 = in.nextLine(); System.out.print("Enter second string: "); String s2 = in.nextLine(); obj.compare(s1, s2); } }Output

Question 1

Question 4Define a class called 'Mobike' with the following specifications:Data MembersPurposeint bnoTo store the bike numberint phnoTo store the phone number of the customerString nameTo store the name of the customerint daysTo store the number of days the bike is taken on rentint chargeTo calculate and store the rental chargeMember MethodsPurposevoid input()To input and store the details of the customervoid compute()To compute the rental chargevoid display()To display the details in the given formatThe rent for a mobike is charged on the following basis:DaysChargeFor first five days₹500 per dayFor next five days₹400 per dayRest of the days₹200 per dayOutput:Bike No.    Phone No.   Name    No. of days     Charge       
xxxxxxx     xxxxxxxx    xxxx        xxx         xxxxxx

Accepted Answer

import java.util.Scanner;

public class Mobike
{
    private int bno;
    private int phno;
    private int days;
    private int charge;
    private String name;
    
    public void input() {
        Scanner in = new Scanner(System.in);
        System.out.print("Enter Customer Name: ");
        name = in.nextLine();
        System.out.print("Enter Customer Phone Number: ");
        phno = in.nextInt();
        System.out.print("Enter Bike Number: ");
        bno = in.nextInt();
        System.out.print("Enter Number of Days: ");
        days = in.nextInt();
    }
    
    public void compute() {
        if (days <= 5)
            charge = days * 500;
        else if (days <= 10)
            charge = (5 * 500) + ((days - 5) * 400);
        else
            charge = (5 * 500) + (5 * 400) + ((days - 10) * 200);
    }
    
    public void display() {
        System.out.println("Bike No.	Phone No.	Name	No. of days 	Charge");
        System.out.println(bno + "	" + phno + "	" + name + "	" + days 
            + "	" + charge);
    }
    
    public static void main(String args[]) {
        Mobike obj = new Mobike();
        obj.input();
        obj.compute();
        obj.display();
    }
}Output

Question 2

Question 5Write a program to input and sort the weight of ten people. Sort and display them in descending order using the selection sort technique.

Accepted Answer

import java.util.Scanner;

public class KboatSelectionSort
{
    public static void main(String args[]) {
        Scanner in = new Scanner(System.in);
        double weightArr[] = new double[10];
        System.out.println("Enter weights of 10 people: ");
        for (int i = 0; i < 10; i++) {
            weightArr[i] = in.nextDouble();
        }
        
        for (int i = 0; i < 9; i++) {
            int idx = i;
            for (int j = i + 1; j < 10; j++) {
                if (weightArr[j] > weightArr[idx])
                    idx = j;
            }
            
            double t = weightArr[i];
            weightArr[i] = weightArr[idx];
            weightArr[idx] = t; 
        }
        
        System.out.println("Sorted Weights Array:");
        for (int i = 0; i < 10; i++) {
            System.out.print(weightArr[i] + " ");
        }
    }
}Output

Question 3

Question 6Write a program to input a number and print whether the number is a special number or not.(A number is said to be a special number, if the sum of the factorial of the digits of the number is same as the original number).Example:145 is a special number, because 1! + 4! + 5! = 1 + 24 + 120 = 145.(Where ! stands for factorial of the number and the factorial value of a number is the product of all integers from 1 to that number, example 5! = 1 * 2 * 3 * 4 * 5 = 120)

Accepted Answer

import java.util.Scanner;

public class KboatSpecialNum
{
    public static int fact(int y) {
        int f = 1;
        for (int i = 1; i <= y; i++) {
            f *= i;
        }
        return f;
    }

public static void main(String args[]) {
        Scanner in = new Scanner(System.in);
        System.out.print("Enter number: ");
        int num = in.nextInt();

int t = num;
        int sum = 0;
        while (t != 0) {
            int d = t % 10;
            sum += fact(d);
            t /= 10;
        }

if (sum == num)
            System.out.println(num + " is a special number");
        else
            System.out.println(num + " is not a special number");

}
}Output

Question 4

Question 7Write a program to accept a word and convert it into lower case, if it is in upper case. Display the new word by replacing only the vowels with the letter following it.Sample Input: computerSample Output: cpmpvtfr

Accepted Answer

import java.util.Scanner;

public class KboatVowelReplace
{
    public static void main(String args[]) {
        Scanner in = new Scanner(System.in);
        System.out.print("Enter a word: ");
        String str = in.nextLine();
        str = str.toLowerCase();
        String newStr = "";
        int len = str.length();

for (int i = 0; i < len; i++) {
            char ch = str.charAt(i);

if (str.charAt(i) == 'a' ||
            str.charAt(i) == 'e' ||
            str.charAt(i) == 'i' ||
            str.charAt(i) == 'o' ||
            str.charAt(i) == 'u') {

char nextChar = (char)(ch + 1);
                newStr = newStr +  nextChar;

}
            else {
                newStr = newStr + ch;
            }
        }

System.out.println(newStr);
    }
}Output

Question 5

Question 8Design a class to overload a function compare( ) as follows:void compare(int, int) — to compare two integers values and print the greater of the two integers.void compare(char, char) — to compare the numeric value of two characters and print with the higher numeric value.void compare(String, String) — to compare the length of the two strings and print the longer of the two.

Accepted Answer

import java.util.Scanner;

public class KboatCompare
{
    public void compare(int a, int b) {
        
        if (a > b) {
            System.out.println(a);
        }
        else {
            System.out.println(b);
        }
        
    }
    
    public void compare(char a, char b) {
        int x = (int)a;
        int y = (int)b;
        
        if (x > y) {
            System.out.println(a);
        }
        else {
            System.out.println(b);
        }
        
    }
    
    public void compare(String a, String b) {
        
        int l1 = a.length();
        int l2 = b.length();
        
        if (l1 > l2) {
            System.out.println(a);
        }
        else {
            System.out.println(b);
        }

}
    
    public static void main(String args[]) {
        Scanner in = new Scanner(System.in);
        KboatCompare obj = new KboatCompare();
        
        System.out.print("Enter first integer: ");
        int n1 = in.nextInt();
        System.out.print("Enter second integer: ");
        int n2 = in.nextInt();
        obj.compare(n1, n2);
        
        System.out.print("Enter first character: ");
        char c1 = in.next().charAt(0);
        System.out.print("Enter second character: ");
        char c2 = in.next().charAt(0);
        in.nextLine();
        obj.compare(c1, c2);
        
        System.out.print("Enter first string: ");
        String s1 = in.nextLine();
        System.out.print("Enter second string: ");
        String s2 = in.nextLine();
        obj.compare(s1, s2);
    }
}Output

Question 6

Question 9Write a menu driven program to perform the following tasks by using Switch case statement:(a) To print the series:0, 3, 8, 15, 24, ............ to n terms. (value of 'n' is to be an input by the user)(b) To find the sum of the series:S = (1/2) + (3/4) + (5/6) + (7/8) + ........... + (19/20)

Accepted Answer

import java.util.Scanner;

public class KboatSeriesMenu
{
    public static void main(String args[]) {
        Scanner in = new Scanner(System.in);
        System.out.println("Type 1 to print series");
        System.out.println("0, 3, 8, 15, 24,....to n terms");
        System.out.println();
        System.out.println("Type 2 to find sum of series");
        System.out.println("(1/2) + (3/4) + (5/6) + (7/8) +....+ (19/20)");
        System.out.println();
        System.out.print("Enter your choice: ");
        int choice = in.nextInt();

switch (choice) {
            case 1:
                System.out.print("Enter n: ");
                int n = in.nextInt();
                for (int i = 1; i <= n; i++)
                    System.out.print(((i * i) - 1) + " ");
                System.out.println();
                break;
                
            case 2:
                double sum = 0;
                for (int i = 1; i <= 19; i = i + 2)
                    sum += i / (double)(i + 1);
                System.out.println("Sum = " + sum);
                break;
                
            default:
                System.out.println("Incorrect Choice");
                break;
        }
    }
}Output

Solved 2011 Question Paper ICSE Class 10 Computer Applications