style: modify the output of scripts

Instead of separating output primes by newline, the scripts now separate
by spaces.

bash/nixpkgs/soe

@@ -13,10 +13,12 @@ unset nums[-1]
 
 while [ -n "$nums" ]; do
     prime=${nums[0]}
-    echo $prime
+    echo -n "$prime "
     nums_=()
     for elem in "${nums[@]}"; do
         [ $(( $elem % $prime )) -eq 0 ] || nums_+=($elem)
     done
     nums=(${nums_[@]})
 done
+
+echo