Problem

Write a recursive function called filter$\_$string that takes a string

as a parameter. Return a string that filters out characters that

are vowels.

$$ Hint

Expected Output

If you test your function with the following code:

# test code below

$if{?}_{(}(){)}_{n}am{e}_{{?}_{?}}=={?}_{(}(){)}_{m}ai{n}_{{?}_{?}}$:

$exampl{e}_w$ord $=$ 'transpoRTATION'

print$(filte{r}_s$tring$(exampl{e}_w$ord$))$

It should produce the output:

What does if $\_=="\_"$: mean?

If you test your function with the following code:

# test code below

$if{?}_{(}(){)}_{n}am{e}_{{?}_{?}}=={?}_{(}(){)}_{m}ai{n}_{{?}_{?}}$:

$exampl{e}_w$ord $=$ 'AppLe'

print$(filte{r}_s$tring$(exampl{e}_w$ord$))$

It should produce the output:

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