ubuntu - Unity数学问题：如何计算3位数的因子？

Question

我正在写一个数学工具包，包括各种命令。其中一个命令是找出一个三位数的因子。把这个命名为“myfactors”。这是示例

$ myfactors abc
abc is not a number. Please enter a number

$ myfactor 72
72 is not a 3 digit number

$ myfactor 105
The factors are: 1 3 5 7 15 21 35 105

原问题：How to find the factors of a 3 digit number

Answer 1

Answer:
Nischay
Take a look at this, factor GNU tools available in Ubuntu.

#!/bin/bash
num=
if [ "$num" -ge 100 ]
then
factor="`factor $num`"
echo "Factor of number $num is $factor"
else
echo "Enter number is not a 3 digit number"
fi

Or you can strictly limit it to only accept 3 digits.

#!/bin/bash
num=
if [ "$num" -ge 100 ] && [ "$num" -lt 1000 ]
then
factor="`factor $num`"
echo "Factor of number $num is $factor"
else
echo "Enter number is not a 3 digit number"
fi