11-石头、剪刀、布游戏

#!/bin/bash
#Author:Willem

# 编写脚本,实现人机<石头,剪刀,布>游戏
game=(石头 剪刀 布)
num=$[RANDOM%3]
computer=${game[$num]}

echo "请根据下列提示选择您的出拳手势:
1.石头
2.剪刀
3.布"

read -p "请选择1-3：" person
case $person in
1)
 if [ $num -eq 0 ];then
        echo "平局"
 elif [ $num -eq 1 ];then
        echo "你赢"
 else
        echo "计算机赢"
 fi;;
2)
 if [ $num -eq 0 ];then
        echo "计算机赢"
 elif [ $num -eq 1 ];then
        echo "平局"
 else
        echo "你赢"
 fi;;
3)
 if [ $num -eq 0 ];then
        echo "你赢"
 elif [ $num -eq 1 ];then
        echo "计算机赢"
 else