The Programming Project

Tuesday, January 6, 2026

ISC Computer Science Theory Paper 2023 Sorting of Words in a String

import java.io.*;

public class String2023 {

    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        SortAlpha obj = new SortAlpha(br);
        obj.acceptsent();
        obj.sort();
        br.close();
    }
}

class SortAlpha {

    private String sent;
    private int n;
    private BufferedReader br;
    private String[] words;

    SortAlpha(BufferedReader br) {
        this.br = br;
        this.sent = "";
        this.n = 0;
    }

    public void sort() {
        words = new String[n];
        int k = 0;
        // extracting the words
        for (int i = 0; i < sent.length(); i++) {
            words[k] = "";
            while (sent.charAt(i) != ' ' && i < sent.length()) {
                words[k] += sent.charAt(i);
                i++;
                if (i == sent.length()) {
                    break;
                }

            }
            if (i < sent.length()) {
                while (sent.charAt(i) == ' ' && i < sent.length()) {
                    i++;
                }
            }
            i -= 1;
            k++;
            if (k == n) {
                break;
            }
        }
        // sorting the array of words
        String temp = "";
        for (int i = 0; i < n - 1; i++) {
            for (int j = 0; j < n - i - 1; j++) {
                if (words[j].compareTo(words[j + 1]) > 0) {
                    temp = words[j];
                    words[j] = words[j + 1];
                    words[j + 1] = temp;
                }
            }
        }
        for (int i = 0; i < n; i++) {
            System.out.print(words[i] + " ");
        }
    }

    // Added 'throws IOException' here to fix the error
    public void acceptsent() throws IOException {
        System.out.println("Enter the sentence in uppercase:");
        sent = br.readLine();

        if (sent == null || sent.trim().isEmpty()) {
            System.out.println("Word count: 0");
            return;
        }

        // Counting words by checking for spaces
        for (int i = 0; i < sent.length() - 1; i++) {
            if (sent.charAt(i) == ' ' && sent.charAt(i + 1) != ' ') {
                n++;
            }
        }

        n += 1;
        System.out.println("Number of words: " + n);
    }
}

USING LIBRARY FUNCTIONS

import java.io.*;
import java.util.Arrays;

public class String2023 {
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        SortAlpha obj = new SortAlpha(br);
        obj.acceptsent();
        obj.sort();
        br.close();
    }
}

class SortAlpha {
    private String sent;
    private int n;
    private BufferedReader br;
    private String[] words;

    SortAlpha(BufferedReader br) {
        this.br = br;
        this.sent = "";
        this.n = 0;
    }

    public void sort() {
        if (n == 0) return;
        
        // Use split() to extract words
        words = sent.trim().split("\\s+");
        
        // Use Arrays.sort() for sorting
        Arrays.sort(words);
        
        // Print sorted words
        System.out.print("Sorted words: ");
        for (int i = 0; i < n; i++) {
            System.out.print(words[i] + " ");
        }
        System.out.println();
    }

    public void acceptsent() throws IOException {
        System.out.println("Enter the sentence in uppercase:");
        sent = br.readLine();

        if (sent == null || sent.trim().isEmpty()) {
            System.out.println("Word count: 0");
            return;
        }

        // Validate uppercase
        if (!sent.matches("[A-Z\\s]+")) {
            System.out.println("Error: Only uppercase letters and spaces allowed!");
            sent = "";
            n = 0;
            return;
        }

        // Use split() and length to count words
        words = sent.trim().split("\\s+");
        n = words.length;
        
        System.out.println("Number of words: " + n);
    }
}

Monday, December 15, 2025

Income Tax Calculator 2025 Onwards New Regime

Budget 2025 Income Tax Calculator

Calculate your tax liability under the new tax regime with detailed breakdown

Gross Salary (₹) Your total salary before any deductions

Other Income (₹) Interest, dividends, rental income, etc.

Try with example incomes:

Key Features of Budget 2025

💰

No Tax up to ₹12 Lakh

Rebate of ₹60,000 makes income up to ₹12,00,000 tax-free

📊

New Tax Slabs

Revised tax slabs under new regime for FY 2025-2026

🛡️

Marginal Relief

Protection for those earning just above ₹12 lakh

💼

Standard Deduction

Increased to ₹75,000 for salaried individuals

New Tax Slabs (FY 2025-2026)

Up to ₹4,00,000

₹4,00,001 - ₹8,00,000

₹8,00,001 - ₹12,00,000

10%

₹12,00,001 - ₹16,00,000

15%

₹16,00,001 - ₹20,00,000

20%

₹20,00,001 - ₹24,00,000

25%

Above ₹24,00,000

30%

Note: This calculator provides an indicative estimate based on Budget 2025 proposals. For actual tax filing, please consult a qualified tax advisor. Results may vary based on individual circumstances.

ISC Computer Science Theory Paper 2023 Program Transpose of a Matrix

import java.util.*;

public class Matrix {

    public static void main(String[] args) {

        // Create a single Scanner object for System.in
        Scanner scanner = new Scanner(System.in);

        // Pass the single Scanner object to the Trans constructor
        Trans obj = new Trans(scanner);

        obj.fillarray();
        obj.display();

        // Close the Scanner
        scanner.close();
    }
}

class Trans {

    private int m;
    private int[][] arr;
    private int[][] arrT;
    private Scanner in;

    Trans(Scanner scanner) {
        this.in = scanner;
        System.out.println("Enter the order (size) of the square matrix:");
        this.m = in.nextInt();
        this.arr = new int[m][m];
        this.arrT = new int[m][m];
    }

    public void fillarray() {
        System.out.println("\n--- Entering elements for the " + m + "x" + m + " matrix ---");
        for (int i = 0; i < m; i++) {
            for (int j = 0; j < m; j++) {
                
                System.out.println("Input element at [" + i + "][" + j + "]:");
                arr[i][j] = in.nextInt();
            }
        }
    }

    public void display() {
        System.out.println("\nORIGINAL MATRIX:");
        printMatrix(arr);

        transpose();
    }

    private void transpose() {
        System.out.println("\nTRANSPOSE OF THE MATRIX:");
        // The core logic for transpose: ArrT[i][j] = Arr[j][i]
        for (int i = 0; i < m; i++) {
            for (int j = 0; j < m; j++) {
                arrT[i][j] = arr[j][i];
            }
        }
        printMatrix(arrT);
    }

    // Helper method for cleaner printing and better formatting
    private void printMatrix(int[][] matrix) {
        for (int i = 0; i < m; i++) {
            for (int j = 0; j < m; j++) {
                // Use format for aligned columns, which improves readability
                System.out.format("%5d", matrix[i][j]);
            }
            System.out.println();
        }
    }
}

Sunday, December 14, 2025

ISC Computer Science Theory Paper 2023 Program Dudeney Number

import java.util.Scanner;

public class Dudeney {

    public static void main(String[] args) {

        NumDude obj = new NumDude();
        obj.input();
        obj.isDude();

    }

}

class NumDude {

    public void isDude() {
        if (numb == (int) Math.pow(sumDigits(numb), 3)) {
            System.out.println(numb + " is a Dudeney Number"); 
        }else {
            System.out.println(numb + " is not a Dudeney Number");
        }
    }

    private int sumDigits(int x) {
        if (x > 10) {
            return ((x % 10) + sumDigits(x / 10));
        } else {
            return x;
        }

    }

    public void input() {
        Scanner scanner = new Scanner(System.in);
        System.out.print("Enter a positive integer: ");
        numb = scanner.nextInt();
        scanner.close();
    }

    public NumDude() {
        this.numb = 0;
    }
    private int numb;

}

🔢 Dudeney Number Checker

A Dudeney number is a positive integer that is a perfect cube such that the sum of its decimal digits equals the cube root of the number.

🎯 Examples:

1 = 1³ and 1 = 1
512 = 8³ and 5+1+2 = 8
4913 = 17³ and 4+9+1+3 = 17
5832 = 18³ and 5+8+3+2 = 18

Enter a positive integer:

Try numbers like: 1, 512, 4913, 5832, 17576, 19683

Tuesday, September 19, 2023

ICSE Java Programming Function Overload 2016 Q6 Solved

Special words are those words which starts and ends with the same letter.

Examples:
EXISTENCE
COMIC
WINDOW
Palindrome words are those words which read the same from left to right and vice versa
Examples:
MALAYALAM
MADAM
LEVEL
ROTATOR
CIVIC
All palindromes are special words, but all special words are not palindromes. Write a program to accept a word check and print Whether the word is a palindrome or only special word.

import java.util.Scanner;

public class PalindromeOrSpecialWord {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        System.out.print("Enter a word: ");
        String word = scanner.nextLine();
        scanner.close();

        if (isPalindrome(word) && isSpecial(word)) {
            System.out.println("The word is both a palindrome and a special word.");
        } else if (isPalindrome(word)) {
            System.out.println("The word is a palindrome.");
        } else if (isSpecial(word)) {
            System.out.println("The word is a special word.");
        } else {
            System.out.println("The word is neither a palindrome nor a special word.");
        }
    }

    // Method to check if a word is a palindrome
    public static boolean isPalindrome(String word) {
        String reversed = "";
        for (int i = word.length() - 1; i >= 0; i--) {
            reversed += word.charAt(i);
        }
        return word.equalsIgnoreCase(reversed);
    }

    // Method to check if a word is a special word
    public static boolean isSpecial(String word) {
        return word.length() >= 2 && word.charAt(0) == word.charAt(word.length() - 1);
    }
}

ICSE Java Programming Function Overload 2016 Q5 Solved

Using the switch statement, write a menu driven program in Java for the following: (i) To print the Floyd’s triangle [Given below] 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 (ii) To display the following pattern: I I C I C S I C S E

For an incorrect option, an appropriate error message should be displayed.

import java.util.Scanner;

public class PatternCreation {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int choice;

        do {
            System.out.println("Menu:");
            System.out.println("1. Print Floyd's Triangle");
            System.out.println("2. Display Pattern");
            System.out.println("3. Exit");
            System.out.print("Enter your choice (1/2/3): ");
            choice = scanner.nextInt();

            switch (choice) {
                case 1:
                    printFloydsTriangle();
                    break;
                case 2:
                    displayPattern();
                    break;
                case 3:
                    System.out.println("Exiting the program.");
                    break;
                default:
                    System.out.println("Invalid choice. Please select 1, 2, or 3.");
                    break;
            }
        } while (choice != 3);

        scanner.close();
    }

    // Method to print Floyd's Triangle
    public static void printFloydsTriangle() {
        int n = 1;
        int rows = 5; // You can change the number of rows as needed

        for (int i = 1; i <= rows; i++) {
            for (int j = 1; j <= i; j++) {
                System.out.print(n + " ");
                n++;
            }
            System.out.println();
        }
    }

    // Method to display the specified pattern
    public static void displayPattern() {
        String pattern = "ICSE";
        for (int i = 0; i < pattern.length(); i++) {
            for (int j = 0; j <= i; j++) {
                System.out.print(pattern.charAt(j) + " ");
            }
            System.out.println();
        }
    }
}

ICSE Java Programming Function Overload 2016 Q4 Solved

Define a class named BookFair with the following description: [15] Instance variables/Data members :

String Bname — stores the name of the book double price — stores the price of the book

Member methods : (i) BookFair() — Default constructor to initialize data members

(ii) void Input() — To input and store the name and the price of the book.

(iii) void calculate() — To calculate the price after discount. Discount is calculated based on the following criteria.

(iv) void display() — To display the name and price of the book after discount. Write a main method to create an object of the class and call the above member methods. Price Discount Less than or equal to Rs. 1000 2% of price More than Rs. 1000 and less than or equal to Rs. 3000 10% of price More than % 3000 15% of price

import java.util.Scanner;

class BookFair {

    private String Bname; // stores the name of the book

    private double price; // stores the price of the book

    // Default constructor to initialize data members

    public BookFair() {

        Bname = "";

        price = 0.0;

    }

    // To input and store the name and the price of the book

    public void Input() {

        Scanner scanner = new Scanner(System.in);

        System.out.print("Enter the name of the book: ");

        Bname = scanner.nextLine();

        System.out.print("Enter the price of the book: Rs. ");

        price = scanner.nextDouble();

        scanner.close();

    }

    // To calculate the price after discount based on the given criteria

    public void calculate() {

        if (price <= 1000) {

            price -= (0.02 * price); // 2% discount

        } else if (price > 1000 && price <= 3000) {

            price -= (0.10 * price); // 10% discount

        } else {

            price -= (0.15 * price); // 15% discount

        }

    }

    // To display the name and price of the book after discount

    public void display() {

        System.out.println("Book Name: " + Bname);

        System.out.println("Price after discount: Rs. " + price);

    }

    public static void main(String[] args) {

        BookFair book = new BookFair(); // Create an object of the class

        book.Input(); // Input the name and price of the book

        book.calculate(); // Calculate the price after discount

        book.display(); // Display the book details after discount

    }

}