# Print a string representing a list of numeric values as a spark graph/bar chart

``

    spark

Given a list of numeric values, this method turns them into a string of bar heights and prints them out. Useful for quickly graphing the shape of an array.

Introduced in v2.5

## Examples

# Example 1
``
    spark (range 1, 5))
| ``
    #=> ▁▃▅█
# Example 2
``
    spark (range 1, 5).shuffle)
| ``
    #=> ▃█▅▁