【Linux】如何用shell编写斐波那契函数

代码如下

#!/bin/bashecho "How many numbers do you want of Fibonacci series ?"   read total   x=0   y=1   i=2   echo "Fibonacci Series up to $total terms :: "   echo "$x"   echo "$y"   while [ $i -lt $total ]   do       i=`expr $i + 1 `       z=`expr $x + $y `       echo "$z"       x=$y       y=$z   done