input: def visualize_popular_languages(x_values: List[str], y_values: List[int]) -> None:
      """ Displays a bar chart of the top 5 most popular programming languages using Matplotlib.
      >>> x_values = ["Python", "Java", "C++", "Javascript", "C#"]
      >>> y_values = [45, 25, 15, 10, 5]
      >>> visualize_popular_languages(x_values, y_values)
      """
      import matplotlib.pyplot as plt
  
      plt.bar(x_values, y_values)
      
      plt.title("Popular Programming Languages")
      plt.ylabel("Percentage of Use")
      plt.xlabel("Languages")
      
      plt.show()
output:     plt.xticks(rotation=45)
      plt.tight_layout()