input: Write a python function to create and display a bar chart using matplotlib.
  assert display_bar_chart([3, 5, 2, 8, 9, 10])==None
  assert display_bar_chart([1, 2, 3, 4, 5])==None
output: def display_bar_chart(values):
      import matplotlib.pyplot as plt
      
      plt.bar(range(len(values)), values)
      plt.xlabel('Index')
      plt.ylabel('Values')
      plt.title('Bar Chart')
      plt.show()