ch.lakshmisriprasanna -easy level tasks

Decisionml.ipynb

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+{
+  "nbformat": 4,
+  "nbformat_minor": 0,
+  "metadata": {
+    "colab": {
+      "provenance": [],
+      "authorship_tag": "ABX9TyN7gRVOaNVFamNga0m0FXjk",
+      "include_colab_link": true
+    },
+    "kernelspec": {
+      "name": "python3",
+      "display_name": "Python 3"
+    },
+    "language_info": {
+      "name": "python"
+    }
+  },
+  "cells": [
+    {
+      "cell_type": "markdown",
+      "metadata": {
+        "id": "view-in-github",
+        "colab_type": "text"
+      },
+      "source": [
+        "<a href=\"https://colab.research.google.com/github/Prasannasri575/Java-Programming-Internship/blob/main/Decisionml.ipynb\" target=\"_parent\"><img src=\"https://colab.research.google.com/assets/colab-badge.svg\" alt=\"Open In Colab\"/></a>"
+      ]
+    },
+    {
+      "cell_type": "markdown",
+      "source": [
+        "Decision Tree Implementation"
+      ],
+      "metadata": {
+        "id": "gIiEk7EZbOJ8"
+      }
+    },
+    {
+      "cell_type": "code",
+      "execution_count": 1,
+      "metadata": {
+        "colab": {
+          "base_uri": "https://localhost:8080/"
+        },
+        "id": "tzAc2dvVariz",
+        "outputId": "e7f2fad8-70d6-4c26-cc22-19b544c5459d"
+      },
+      "outputs": [
+        {
+          "output_type": "stream",
+          "name": "stdout",
+          "text": [
+            "Accuracy: 1.0\n"
+          ]
+        }
+      ],
+      "source": [
+        "from sklearn.tree import DecisionTreeClassifier\n",
+        "from sklearn.model_selection import train_test_split\n",
+        "from sklearn.datasets import load_iris\n",
+        "from sklearn.metrics import accuracy_score\n",
+        "\n",
+        "# Load the iris dataset\n",
+        "iris = load_iris()\n",
+        "X = iris.data\n",
+        "y = iris.target\n",
+        "\n",
+        "# Split data into training and testing sets\n",
+        "X_train, X_test, y_train, y_test = train_test_split(X, y, test_size=0.2, random_state=42)\n",
+        "\n",
+        "# Create a Decision Tree Classifier\n",
+        "clf = DecisionTreeClassifier()\n",
+        "\n",
+        "# Train the model\n",
+        "clf.fit(X_train, y_train)\n",
+        "\n",
+        "# Make predictions\n",
+        "y_pred = clf.predict(X_test)\n",
+        "\n",
+        "# Evaluate the model's accuracy\n",
+        "accuracy = accuracy_score(y_test, y_pred)\n",
+        "print(\"Accuracy:\",accuracy)"
+      ]
+    }
+  ]
+}

SimpleCalculator.java

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+import java.util.Scanner;
+
+public class SimpleCalculator {
+
+    public static void main(String[] args) {
+        Scanner scanner = new Scanner(System.in);
+
+        // Displaying the menu
+        System.out.println("Simple Calculator");
+        System.out.println("Select an operation:");
+        System.out.println("1. Addition");
+        System.out.println("2. Subtraction");
+        System.out.println("3. Multiplication");
+        System.out.println("4. Division");
+
+        // Reading the user's choice
+        System.out.print("Enter your choice (1-4): ");
+        int choice = scanner.nextInt();
+
+        // Reading the two numbers
+        System.out.print("Enter first number: ");
+        double num1 = scanner.nextDouble();
+        System.out.print("Enter second number: ");
+        double num2 = scanner.nextDouble();
+
+        double result = 0;
+        boolean validChoice = true;
+
+        // Performing the chosen operation
+        switch (choice) {
+            case 1:
+                result = num1 + num2;
+                break;
+            case 2:
+                result = num1 - num2;
+                break;
+            case 3:
+                result = num1 * num2;
+                break;
+            case 4:
+                if (num2 != 0) {
+                    result = num1 / num2;
+                } else {
+                    System.out.println("Error: Division by zero is not allowed.");
+                    validChoice = false;
+                }
+                break;
+            default:
+                System.out.println("Invalid choice! Please select a valid operation (1-4).");
+                validChoice = false;
+        }
+
+        // Displaying the result
+        if (validChoice) {
+            System.out.println("The result is: " + result);
+        }
+
+        scanner.close();
+    }
+}

TemperatureConverter.java

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+import java.util.Scanner;
+
+public class TemperatureConverter {
+
+    public static void main(String[] args) {
+
+
+        Scanner input = new Scanner(System.in);
+
+
+        System.out.print("Enter temperature value: ");
+        double temp = input.nextDouble();       
+
+        System.out.print("Enter temperature scale (C, F, or K): ");
+        String scale = input.next();
+
+        double celsius;
+        switch(scale.toUpperCase()) {
+            case "C":
+                celsius = temp;
+                break;
+            case "F":
+                celsius = (temp - 32) * 5 / 9;
+                break;
+            case "K":
+                celsius = temp - 273.15;
+                break;
+            default:
+                System.out.println("Invalid temperature scale.");
+                return;
+        }
+
+        double fahrenheit = celsius * 9 / 5 + 32;
+
+        double kelvin = celsius + 273.15;
+
+        System.out.println("Celsius: " + celsius + " C");
+        System.out.println("Fahrenheit: " + fahrenheit + " F");
+        System.out.println("Kelvin: " + kelvin + " K");
+    }
+
+}

ToDoList.java

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+import java.util.ArrayList;
+import java.util.Scanner;
+
+public class ToDoList {
+    private static ArrayList<String> tasks = new ArrayList<>();
+
+    public static void main(String[] args) {
+        Scanner scanner = new Scanner(System.in);
+
+        while (true) {
+            System.out.println("\nToDo List:");
+            displayTasks();
+
+            System.out.println("\nChoose an option:");
+            System.out.println("1. Add Task");
+            System.out.println("2. Delete Task");
+            System.out.println("3. Mark Task as Completed");
+            System.out.println("4. Exit");
+
+            System.out.print("Enter your choice: ");
+            int choice = scanner.nextInt();
+
+            switch (choice) {
+                case 1:
+                    addTask(scanner);
+                    break;
+                case 2:
+                    deleteTask(scanner);
+                    break;
+                case 3:
+                    markAsCompleted(scanner);
+                    break;
+                case 4:
+                    System.out.println("Exiting ToDo List...");
+                    scanner.close();
+                    return;
+                default:
+                    System.out.println("Invalid choice! Please choose again.");
+            }
+        }
+    }
+
+    private static void displayTasks() {
+        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));
+            }
+        }
+    }
+
+    private static void addTask(Scanner scanner) {
+        scanner.nextLine(); // Consume newline
+        System.out.print("Enter task description: ");
+        String task = scanner.nextLine();
+        tasks.add(task);
+        System.out.println("Task added successfully.");
+    }
+
+    private static void deleteTask(Scanner scanner) {
+        if (tasks.isEmpty()) {
+            System.out.println("No tasks available to delete.");
+            return;
+        }
+
+        System.out.print("Enter task number to delete: ");
+        int taskNumber = scanner.nextInt();
+        if (taskNumber < 1 || taskNumber > tasks.size()) {
+            System.out.println("Invalid task number!");
+            return;
+        }
+
+        tasks.remove(taskNumber - 1);
+        System.out.println("Task deleted successfully.");
+    }
+
+    private static void markAsCompleted(Scanner scanner) {
+        if (tasks.isEmpty()) {
+            System.out.println("No tasks available to mark as completed.");
+            return;
+        }
+
+        System.out.print("Enter task number to mark as completed: ");
+        int taskNumber = scanner.nextInt();
+        if (taskNumber < 1 || taskNumber > tasks.size()) {
+            System.out.println("Invalid task number!");
+            return;
+        }
+
+        String completedTask = tasks.get(taskNumber - 1) + " (Completed)";
+        tasks.set(taskNumber - 1, completedTask);
+        System.out.println("Task marked as completed.");
+    }
+}

numberguessing.java

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+// Java program for the above approach
+import java.util.Scanner;
+
+public class GFG {
+
+	// Function that implements the
+	// number guessing game
+	public static void
+	guessingNumberGame()
+	{
+		// Scanner Class
+		Scanner sc = new Scanner(System.in);
+
+		// Generate the numbers
+		int number = 1 + (int)(100
+							* Math.random());
+
+		// Given K trials
+		int K = 5;
+
+		int i, guess;
+
+		System.out.println(
+			"A number is chosen"
+			+ " between 1 to 100."
+			+ "Guess the number"
+			+ " within 5 trials.");
+
+		// Iterate over K Trials
+		for (i = 0; i < K; i++) {
+
+			System.out.println(
+				"Guess the number:");
+
+			// Take input for guessing
+			guess = sc.nextInt();
+
+			// If the number is guessed
+			if (number == guess) {
+				System.out.println(
+					"Congratulations!"
+					+ " You guessed the number.");
+				break;
+			}
+			else if (number > guess
+					&& i != K - 1) {
+				System.out.println(
+					"The number is "
+					+ "greater than " + guess);
+			}
+			else if (number < guess
+					&& i != K - 1) {
+				System.out.println(
+					"The number is"
+					+ " less than " + guess);
+			}
+		}
+
+		if (i == K) {
+			System.out.println(
+				"You have exhausted"
+				+ " K trials.");
+
+			System.out.println(
+				"The number was " + number);
+		}
+	}
+
+	// Driver Code
+	public static void
+	main(String arg[])
+	{
+
+		// Function Call
+		guessingNumberGame();
+	}
+}