findwordofLength $(25$ points$)$

Write a function findwordoflength that locates the first word in a sentence that has the given

length. Details:

accepts two arguments:

the desired word length

a sentence $($ str$)$

returns the location $($index$)$ of the first word in the sentence that has the desired length

for this problem, the first word has location$/$index $0,$ the second index $1,$ and so forth $...$

$($Python style counting$/$indexing$)$

the punctuation characters

should not be included in any word's length

$-1$ is returned if no word of the desired length is found