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## cleanstr
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### Instructions
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Write a **program** that takes a `string`, and displays this `string` with exactly:
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- one space between words.
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- without spaces nor tabs at the beginning nor at the end.
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- with the result followed by a newline ("`\n`").
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A "word" is defined as a part of a `string` delimited either by spaces/tabs, or
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by the start/end of the `string`.
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If the number of arguments is not 1, or if there are no words to display, the
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program displays a newline("`\n`").
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### Usage :
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```console
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$ go run . "you see it's easy to display the same thing" | cat -e
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you see it's easy to display the same thing$
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$ go run . " only it's harder "
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only it's harder$
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$ go run . " how funny" "Did you hear Mathilde ?"
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$ go run . ""
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$
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```
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