Problem $3$

Write a recursive function progress$\_$bar$($completion$\_$percent$)$ that takes an int completion$\_$percent. The function should return a string

progress bar representing the completion percentage. The beginning and end of the completion bar should be square brackets $[$ and $].$ Each ten

percent of completion will be represented by one character in the progress bar. Thus, every progress bar should be ten characters long. Use hashmarks

# to represent the completion percentage and use blank spaces to represent the remaining work to be completed. You should always 'round down' the

completion number to the nearest ten $($see hint below$).$ You do not need to deal with inputs below $0$ or above $100.$

in the digisum$()$ or vertical$()$ practice problems for an idea of how to round down.

Sample usage:

$$ completion $=$ progress$\_$bar$(25)$

$$ completion

$\text{'}[$## $]\text{'}$

$$ completion $=$ progress$\_$bar$(37)$

$$ completion

$\text{'}[$### $]\text{'}$

$$ completion $=$ progress$\_$bar$(71)$

$$ completion

$\text{'}[$#######$]\text{'}$

$$ completion $=$ progress$\_$bar$(100)$

$$ completion

$\text{'}[$##########$]\text{'}$

$$ completion $=$ progress$\_$bar$(99)$

$$ completion

$\text{'}[$######### $]\text{'}$

$$ completion $=$ progress$\_$bar$(1)$

$$ completion

$\text{'}[]\text{'}$