// Creating a list of cities
List<String> cities = new List<String>{'Mumbai', 'Delhi', 'Bangalore', 'Chennai'};
 
// Adding elements
cities.add('Hyderabad');  
cities.add(2, 'Pune');  // Inserts at index 2
 
// Retrieving elements
System.debug(cities.get(2)); // Output: Pune
 
// Updating an element
cities.set(2, 'Kolkata'); 
 
// Checking properties
System.debug(cities.size()); // Output: 5
System.debug(cities.contains('Delhi')); // Output: true
System.debug(cities.indexOf('Chennai')); // Output: 3
 
// Sorting
cities.sort(); // Now sorted alphabetically
 
// Removing elements
cities.remove(1); // Removes the element at index 1
cities.clear();   // Clears all elements

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