[Help-bash] Is there a way to contract y=${x[*]}; "${y// /}" into one line

[Peng Yu]

Hi, I use the following code to remove spaces from the string of
"${x[*]}". But it requires two lines. Is there a way to do it in one
line? Thanks.

x=(a b c)
y=${x[*]}
echo "${y// /}"

-- 
Regards,
Peng