生成的密码和用户输入可以接受重复数字所以相对一般规则的猜数字可能难度要大不少本版本规则：A--数字对，位置也对B--排除A的结果后，数字对，但位置不对开始后，系统化初始化一个4位可重复数字，如“1223”。假设用户第一次输入“1234”，那么系统将提示“2A1B”，前两位数字“12”相同并且位置也相同，为“2A”。后两位数字中，用户输入的“3”与密文中“3”相同，但两者位置不同，则为“1B”，最终结果为“2A1B”。再假设用户此时输入“1232”，那么结果则为“2A2B”，计算方法与前次一样。代码如下
#!/bin/bash
clear
echo
echo "###################################################################"
echo "# this is a bash-shell game write by Email:breeze7086@gmail.com #"
echo "# the game called *digits*,and this version have repeated numbers #"
echo "# version 1.0 #"
echo "###################################################################"
echo -e "\n\n"
declare INPUT
declare PASSWORD
declare A
declare B
declare X
declare Y
declare LOOP
#This funtion init the variable PASSWORD that user need to guess
init_password()
{
PASSWORD=`echo $$(($$RANDOM%10000))`
echo $$PASSWORD | grep '^[0-9]\{4\}$$' >/dev/null 2>&1
if [ $$? != 0 ]
then
init_password
else
input
fi
}
#This funtion accept the input from user's keyboard
input()
{
echo -n "please input a number between 0000-9999:"
read INPUT
echo $$INPUT | grep '^[0-9]\{4\}$$' >/dev/null 2>&1
if [ $$? != 0 ]
then
echo "retry a number between 0000-9999 and do not input a char"
input
else
judge
fi
}
#This funtion is the main funtion
judge()
{
X=$$INPUT
Y=$$PASSWORD
while [ $$INPUT != $$PASSWORD ]
do
A=0
B=0
judge_a
judge_b
LOOP=`expr $$LOOP + 1`
echo "****************************"
echo "* "$$A"A"$$B"B *"
echo "****************************"
input
done
}
#This funtion count the variable A's value
judge_a()
{
for i in `seq 4`
do
VAR_INPUT=`expr substr "$$X" $$i 1`
for j in `seq 4`
do
VAR_PASSWORD=`expr substr "$$Y" $$j 1`
if [[ $$VAR_INPUT = $$VAR_PASSWORD && $$VAR_INPUT != "" && $$VAR_PASSWORD != "" && $$i = $$j ]]
then
A=`expr $$A + 1`
X=`expr substr $$X 1 "$$[$$i-1]"``expr substr $$X "$$[$$i+1]" 4`
Y=`expr substr $$Y 1 "$$[$$i-1]"``expr substr $$Y "$$[$$i+1]" 4`
judge_a
fi
done
done
}
#This funtion count the variable B's value
judge_b()
{
for i in `seq 4`
do
VAR_INPUT=`expr substr "$$X" $$i 1`
for j in `seq 4`
do
VAR_PASSWORD=`expr substr "$$Y" $$j 1`
if [[ $$VAR_INPUT = $$VAR_PASSWORD && $$VAR_INPUT != "" && $$VAR_PASSWORD != "" ]]
then
B=`expr $$B + 1`
X=`expr substr "$$X" 1 "$$[$$i-1]"``expr substr "$$X" "$$[$$i+1]" 4`
Y=`expr substr "$$Y" 1 "$$[$$j-1]"``expr substr "$$Y" "$$[$$j+1]" 4`
judge_b
fi
done
done
}
#This is the begin of script
LOOP=1
init_password
echo "#############################################"
echo "#congratulations!You have tried $$LOOP times! #"
echo "# The password is $$PASSWORD ! #"
echo "#############################################"
