判断参数中奇偶数个数并打印

#!/bin/sh
sum1=0
sum2=0

for x
do
 if [ `expr $x % 2` -eq 0 ]
 then
  sum1=`expr $sum1 + 1`
  evenstring="$evenstring$x "
 else
  sum2=`expr $sum2 + 1`
  oddstring="$oddstring$x "
 fi
done
echo $sum1 even: $evenstring
echo $sum2 odd: $oddstring