What is the difference between a tuple and an array?

A tuple and an array are data structures, but they differ in several key aspects:

• Mutability:

  • A tuple is usually immutable, meaning its contents cannot be changed after creation.
  • An array, on the other hand, is mutable, allowing elements to be changed by index.

• Element types:

  • In a tuple, elements can be of different types.
  • In an array, all elements are usually of the same type (especially in languages with strict typing).

• Usage:

  • Tuples are often used to group a fixed set of values, such as coordinates (x, y).
  • Arrays are used to store sequences of data where the ability to modify and iterate over elements is important.

Example in Python:

# Tuple
point = (10, 20)  # immutable

# Array (list in Python)
numbers = [1, 2, 3]
numbers[0] = 10  # can be changed