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AdvancedConversions.java #7013

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213 changes: 213 additions & 0 deletions src/main/java/com/thealgorithms/conversions/AdvancedConversions.java
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import java.util.Scanner;

// --- Base Interface for Conversions ---
interface Convertible {
void convert(Scanner scanner);
}

// --- Length Conversion Class ---
class LengthConverter implements Convertible {
public void convert(Scanner scanner) {
System.out.println("--- LENGTH CONVERSION ---");
System.out.println("1. Centimeters to Meters");
System.out.println("2. Meters to Centimeters");
System.out.println("3. Meters to Feet");
System.out.println("4. Feet to Meters");
System.out.print("Choose conversion: ");
int choice = scanner.nextInt();

System.out.print("Enter value: ");
double value = scanner.nextDouble();
double result;

switch (choice) {
case 1:
result = value / 100;
System.out.println(value + " cm = " + result + " m");
break;
case 2:
result = value * 100;
System.out.println(value + " m = " + result + " cm");
break;
case 3:
result = value * 3.28084;
System.out.println(value + " m = " + result + " ft");
break;
case 4:
result = value / 3.28084;
System.out.println(value + " ft = " + result + " m");
break;
default:
System.out.println("Invalid choice!");
}
}
}

// --- Weight Conversion Class ---
class WeightConverter implements Convertible {
public void convert(Scanner scanner) {
System.out.println("--- WEIGHT CONVERSION ---");
System.out.println("1. Grams to Kilograms");
System.out.println("2. Kilograms to Grams");
System.out.println("3. Kilograms to Pounds");
System.out.println("4. Pounds to Kilograms");
System.out.print("Choose conversion: ");
int choice = scanner.nextInt();

System.out.print("Enter value: ");
double value = scanner.nextDouble();
double result;

switch (choice) {
case 1:
result = value / 1000;
System.out.println(value + " g = " + result + " kg");
break;
case 2:
result = value * 1000;
System.out.println(value + " kg = " + result + " g");
break;
case 3:
result = value * 2.20462;
System.out.println(value + " kg = " + result + " lb");
break;
case 4:
result = value / 2.20462;
System.out.println(value + " lb = " + result + " kg");
break;
default:
System.out.println("Invalid choice!");
}
}
}

// --- Temperature Conversion Class ---
class TemperatureConverter implements Convertible {
public void convert(Scanner scanner) {
System.out.println("--- TEMPERATURE CONVERSION ---");
System.out.println("1. Celsius to Fahrenheit");
System.out.println("2. Fahrenheit to Celsius");
System.out.println("3. Celsius to Kelvin");
System.out.println("4. Kelvin to Celsius");
System.out.print("Choose conversion: ");
int choice = scanner.nextInt();

System.out.print("Enter temperature: ");
double value = scanner.nextDouble();
double result;

switch (choice) {
case 1:
result = (value * 9 / 5) + 32;
System.out.println(value + " °C = " + result + " °F");
break;
case 2:
result = (value - 32) * 5 / 9;
System.out.println(value + " °F = " + result + " °C");
break;
case 3:
result = value + 273.15;
System.out.println(value + " °C = " + result + " K");
break;
case 4:
result = value - 273.15;
System.out.println(value + " K = " + result + " °C");
break;
default:
System.out.println("Invalid choice!");
}
}
}

// --- Currency Conversion Class ---
class CurrencyConverter implements Convertible {
public void convert(Scanner scanner) {
System.out.println("--- CURRENCY CONVERSION ---");
System.out.println("1. USD to GBP");
System.out.println("2. GBP to USD");
System.out.println("3. USD to JPY");
System.out.println("4. JPY to USD");
System.out.print("Choose conversion: ");
int choice = scanner.nextInt();

System.out.print("Enter amount: ");
double value = scanner.nextDouble();
double result;

// Example static rates
double usdToGbp = 0.78;
double gbpToUsd = 1.28;
double usdToJpy = 150.35;
double jpyToUsd = 1 / 150.35;

switch (choice) {
case 1:
result = value * usdToGbp;
System.out.println(value + " USD = " + result + " GBP");
break;
case 2:
result = value * gbpToUsd;
System.out.println(value + " GBP = " + result + " USD");
break;
case 3:
result = value * usdToJpy;
System.out.println(value + " USD = " + result + " JPY");
break;
case 4:
result = value * jpyToUsd;
System.out.println(value + " JPY = " + result + " USD");
break;
default:
System.out.println("Invalid choice!");
}
}
}

// --- Main Program ---
public class AdvancedConversions {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
Convertible converter;
int choice;

do {
System.out.println("===== ADVANCED CONVERSIONS =====");
System.out.println("1. Length Converter");
System.out.println("2. Weight Converter");
System.out.println("3. Temperature Converter");
System.out.println("4. Currency Converter");
System.out.println("0. Exit");
System.out.print("Choose converter: ");
choice = scanner.nextInt();

switch (choice) {
case 1:
converter = new LengthConverter();
converter.convert(scanner);
break;
case 2:
converter = new WeightConverter();
converter.convert(scanner);
break;
case 3:
converter = new TemperatureConverter();
converter.convert(scanner);
break;
case 4:
converter = new CurrencyConverter();
converter.convert(scanner);
break;
case 0:
System.out.println("Thank you for using the converter. Goodbye!");
break;
default:
System.out.println("Invalid option!");
}

System.out.println();

} while (choice != 0);

scanner.close();
}
}
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