README.md

My Elixir Practice

"Elixir Saves Pinterest $2 Million a Year In Server Costs", Michael Lubas, 2023-08-28

References

• https://elixir-lang.org/
• https://hexdocs.pm/elixir/introduction.html

<Note>

• Use version 1.15.7 in JDoodle, unless otherwise specified

<List>

• Fibonacci Sequence (2024.11.19)

Fibonacci Sequence (2024.11.19)

• Generate the Fibonacci sequence up to the specified number of terms

• Code and Output

  Code : FibonacciSequence.ex

  defmodule Fibonacci do
    @moduledoc """
    A module for generating and printing Fibonacci sequences.
    This module uses lazy evaluation for efficient sequence generation.
  
    ## Author : kimpro82
    ## Date   : 2024-11-19
    """
  
    @doc """
    Generates a Fibonacci sequence of the given length.
    """
    def generate(n) when n > 0 do
      # Use Stream.unfold to create an infinite Fibonacci sequence and take n elements
      Stream.unfold({1, 1}, fn {a, b} -> {a, {b, a + b}} end)
      |> Enum.take(n)
    end
  
    @doc """
    Generates and prints a Fibonacci sequence of the given length on a single line.
    """
    def print(n) do
      n
      |> generate()
      |> Enum.map(&Integer.to_string/1)  # Convert each number to a string
      |> Enum.join(" ")                  # Join the strings with space as separator
      |> IO.puts()                       # Print the result and automatically add a newline
    end
  end

  # Usage example: Print the first 10 Fibonacci numbers
  Fibonacci.print(10)

  Output

  1 1 2 3 5 8 13 21 34 55