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# 🧮 Simple Calculator — Python

def calculator():
    print("=== Simple Calculator ===")
    num1 = float(input("Enter first number: "))
    num2 = float(input("Enter second number: "))
    op = input("Operator (+, -, *, /): ")

    if op == "+":
        result = num1 + num2
    elif op == "-":
        result = num1 - num2
    elif op == "*":
        result = num1 * num2
    elif op == "/":
        if num2 != 0:
            result = num1 / num2
        else:
            print("Error: Cannot divide by zero!")
            return
    else:
        print("Invalid operator!")
        return

    print(f"Result: {num1} {op} {num2} = {result}")

calculator()

// 📝 To-Do List — JavaScript + LocalStorage
let todos = JSON.parse(localStorage.getItem("todos")) || [];

function addTodo() {
  const input = document.getElementById("todoInput");
  const text = input.value.trim();
  if (!text) return;

  todos.push({ id: Date.now(), text, done: false });
  localStorage.setItem("todos", JSON.stringify(todos));
  input.value = "";
  renderTodos();
}

function toggleTodo(id) {
  todos = todos.map(t =>
    t.id === id ? { ...t, done: !t.done } : t
  );
  localStorage.setItem("todos", JSON.stringify(todos));
  renderTodos();
}

function renderTodos() {
  const list = document.getElementById("todoList");
  list.innerHTML = todos.map(t => `
    <li class="${t.done ? 'done' : ''}"
        onclick="toggleTodo(${t.id})">
      ${t.done ? '✅' : '⬜'} ${t.text}
    </li>
  `).join("");
}

# 📊 Number Statistics — Python

def get_stats(numbers):
    if not numbers:
        return print("Empty list!")

    minimum = min(numbers)
    maximum = max(numbers)
    total   = sum(numbers)
    average = total / len(numbers)

    print(f"Numbers : {numbers}")
    print(f"Min     : {minimum}")
    print(f"Max     : {maximum}")
    print(f"Sum     : {total}")
    print(f"Average : {average:.2f}")

# — Input from user
raw = input("Enter numbers (comma-separated): ")
nums = [float(x.strip()) for x in raw.split(",")]
get_stats(nums)