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Malli Chaitanya Lakshmi - Easy level tasks #36

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Malli Chaitanya Lakshmi - Easy level tasks #36

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47 changes: 47 additions & 0 deletions NumberGuessingGame.java
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import java.util.Random;
import java.util.Scanner;

public class NumberGuessingGame {
public static void main(String[] args) {
// Create a Random object to generate random numbers
Random random = new Random();

// Generate a random number between 1 and 100
int targetNumber = random.nextInt(100) + 1;

// Maximum number of attempts
int maxAttempts = 10;

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

System.out.println("Welcome to the Number Guessing Game!");
System.out.println("I have generated a random number between 1 and 100.");
System.out.println("You have " + maxAttempts + " attempts to guess it.");

// Variable to track the number of attempts used
int attempts = 0;

while (attempts < maxAttempts) {
System.out.print("Enter your guess: ");
int guess = scanner.nextInt();
attempts++;

if (guess == targetNumber) {
System.out.println("Congratulations! You guessed the number in " + attempts + " attempts.");
break;
} else if (guess < targetNumber) {
System.out.println("Too low! Try again.");
} else {
System.out.println("Too high! Try again.");
}

if (attempts == maxAttempts) {
System.out.println("Sorry, you've used all " + maxAttempts + " attempts. The correct number was " + targetNumber + ".");
}
}

// Close the scanner
scanner.close();
}
}
71 changes: 71 additions & 0 deletions Simple_calci.java
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import java.util.Scanner;

public class Simple_calci {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
boolean exit = false;

while (!exit) {
showMenu();
int choice = scanner.nextInt();
switch (choice) {
case 1:
performOperation(scanner, "add");
break;
case 2:
performOperation(scanner, "subtract");
break;
case 3:
performOperation(scanner, "multiply");
break;
case 4:
performOperation(scanner, "divide");
break;
case 5:
exit = true;
System.out.println("Exiting the calculator. Goodbye!");
break;
default:
System.out.println("Invalid choice. Please try again.");
}
}

scanner.close();
}

private static void showMenu() {
System.out.println("\n--- Basic Calculator ---");
System.out.println("1. Addition");
System.out.println("2. Subtraction");
System.out.println("3. Multiplication");
System.out.println("4. Division");
System.out.println("5. Exit");
System.out.print("Enter your choice: ");
}

private static void performOperation(Scanner scanner, String operation) {
System.out.print("Enter the first number: ");
double num1 = scanner.nextDouble();
System.out.print("Enter the second number: ");
double num2 = scanner.nextDouble();

switch (operation) {
case "add":
System.out.printf("Result: %.2f + %.2f = %.2f\n", num1, num2, num1 + num2);
break;
case "subtract":
System.out.printf("Result: %.2f - %.2f = %.2f\n", num1, num2, num1 - num2);
break;
case "multiply":
System.out.printf("Result: %.2f * %.2f = %.2f\n", num1, num2, num1 * num2);
break;
case "divide":
if (num2 != 0) {
System.out.printf("Result: %.2f / %.2f = %.2f\n", num1, num2, num1 / num2);
} else {
System.out.println("Error: Division by zero is not allowed.");
}
break;
}
}
}
87 changes: 87 additions & 0 deletions Temp_converter.java
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import java.util.Scanner;

public class Temp_converter {

// Method to convert Celsius to Fahrenheit
public static double celsiusToFahrenheit(double celsius) {
return (celsius * 9/5) + 32;
}

// Method to convert Celsius to Kelvin
public static double celsiusToKelvin(double celsius) {
return celsius + 273.15;
}

// Method to convert Fahrenheit to Celsius
public static double fahrenheitToCelsius(double fahrenheit) {
return (fahrenheit - 32) * 5/9;
}

// Method to convert Fahrenheit to Kelvin
public static double fahrenheitToKelvin(double fahrenheit) {
return (fahrenheit - 32) * 5/9 + 273.15;
}

// Method to convert Kelvin to Celsius
public static double kelvinToCelsius(double kelvin) {
return kelvin - 273.15;
}

// Method to convert Kelvin to Fahrenheit
public static double kelvinToFahrenheit(double kelvin) {
return (kelvin - 273.15) * 9/5 + 32;
}

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

System.out.println("Temperature Converter");
System.out.println("=====================");
System.out.println("Choose the conversion type:");
System.out.println("1. Celsius to Fahrenheit");
System.out.println("2. Celsius to Kelvin");
System.out.println("3. Fahrenheit to Celsius");
System.out.println("4. Fahrenheit to Kelvin");
System.out.println("5. Kelvin to Celsius");
System.out.println("6. Kelvin to Fahrenheit");

int choice = scanner.nextInt();

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

double convertedValue = 0;

switch (choice) {
case 1:
convertedValue = celsiusToFahrenheit(tempValue);
System.out.println(tempValue + " Celsius is equal to " + convertedValue + " Fahrenheit.");
break;
case 2:
convertedValue = celsiusToKelvin(tempValue);
System.out.println(tempValue + " Celsius is equal to " + convertedValue + " Kelvin.");
break;
case 3:
convertedValue = fahrenheitToCelsius(tempValue);
System.out.println(tempValue + " Fahrenheit is equal to " + convertedValue + " Celsius.");
break;
case 4:
convertedValue = fahrenheitToKelvin(tempValue);
System.out.println(tempValue + " Fahrenheit is equal to " + convertedValue + " Kelvin.");
break;
case 5:
convertedValue = kelvinToCelsius(tempValue);
System.out.println(tempValue + " Kelvin is equal to " + convertedValue + " Celsius.");
break;
case 6:
convertedValue = kelvinToFahrenheit(tempValue);
System.out.println(tempValue + " Kelvin is equal to " + convertedValue + " Fahrenheit.");
break;
default:
System.out.println("Invalid choice.");
break;
}

scanner.close();
}
}
118 changes: 118 additions & 0 deletions Todo_list.java
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import java.util.ArrayList;
import java.util.Scanner;

class Task {
private String description;
private boolean isCompleted;

public Task(String description) {
this.description = description;
this.isCompleted = false;
}

public String getDescription() {
return description;
}

public boolean isCompleted() {
return isCompleted;
}

public void markAsCompleted() {
isCompleted = true;
}

@Override
public String toString() {
return (isCompleted ? "[X] " : "[ ] ") + description;
}
}

public class Todo_list {
private static ArrayList<Task> tasks = new ArrayList<>();
private static Scanner scanner = new Scanner(System.in);

public static void main(String[] args) {
boolean exit = false;

while (!exit) {
showMenu();
int choice = scanner.nextInt();
scanner.nextLine(); // consume newline
switch (choice) {
case 1:
addTask();
break;
case 2:
deleteTask();
break;
case 3:
markTaskAsCompleted();
break;
case 4:
viewTasks();
break;
case 5:
exit = true;
System.out.println("Exiting the task manager. Goodbye!");
break;
default:
System.out.println("Invalid choice. Please try again.");
}
}

scanner.close();
}

private static void showMenu() {
System.out.println("\n--- Task Manager ---");
System.out.println("1. Add Task");
System.out.println("2. Delete Task");
System.out.println("3. Mark Task as Completed");
System.out.println("4. View Tasks");
System.out.println("5. Exit");
System.out.print("Enter your choice: ");
}

private static void addTask() {
System.out.print("Enter the task description: ");
String description = scanner.nextLine();
tasks.add(new Task(description));
System.out.println("Task added successfully.");
}

private static void deleteTask() {
System.out.print("Enter the task number to delete: ");
int taskNumber = scanner.nextInt();

if (taskNumber > 0 && taskNumber <= tasks.size()) {
tasks.remove(taskNumber - 1);
System.out.println("Task deleted successfully.");
} else {
System.out.println("Invalid task number. Please try again.");
}
}

private static void markTaskAsCompleted() {
System.out.print("Enter the task number to mark as completed: ");
int taskNumber = scanner.nextInt();

if (taskNumber > 0 && taskNumber <= tasks.size()) {
tasks.get(taskNumber - 1).markAsCompleted();
System.out.println("Task marked as completed.");
} else {
System.out.println("Invalid task number. Please try again.");
}
}

private static void viewTasks() {
System.out.println("\n--- Your Tasks ---");
if (tasks.isEmpty()) {
System.out.println("No tasks available.");
} else {
for (int i = 0; i < tasks.size(); i++) {
System.out.println((i + 1) + ". " + tasks.get(i));
}
}
}
}