linxu shell 递归和while循环 的 factorial计算
1 #!/bin/bash 2 read -p "Enter a number: " num 3 result=$num 4 while [ $num -gt 1 ] 5 do 6 num=$[ $num - 1 ] 7 result=$[ $result * $num ] 8 done 9 echo "The result is $result"
1 #!/bin/bash 2 function factorial { 3 if [ $1 -le 0 ];then 4 echo 1 5 else 6 local temp=$[ $1 -1 ] 7 local result=`factorial $temp` 8 echo $[ $result * $1 ] 9 fi 10 } 11 read -p "请输入要计算的数字: " num 12 result=`factorial $num` 13 echo -e "结果为$result\n"
