
con.Open()
string sqlstr = "哗燃sql语句"答芦好清铅
SqlDataAdapter da = new SqlDataAdapter(sqlstr, con)
DataSet ds= new DataSet()
da.Fill(ds)
dataGridView1.DataSource = ds.Tables[0]
con.Close()
【第二题】密码破译str='TIPQRFXQG JIPQCPIQXTI ZIXKLGHVFNV XI'
str=str-'A'+1 % alphabet ->1,2,...26
str(str<0|str>26)=0% space->0
N=length(str)
M=27
strout=zeros(1,N)
if mod(N,2)==0
for ii=1:N/2
a=str(ii*2-1)
b=str(ii*2)
if a>=b
strout(ii*2-1)=a-b
else
strout(ii*2-1)=a-b+M
end
for jj=1:6
if (b+M*jj)/7 - floor((b+M*jj)/7) <eps
strout(ii*2) = (b+M*jj)/7
end
end
end
end
strout(strout>=1 &strout<= 26) = strout(strout>=1 &strout<= 26)-1 + 'A'
strout(strout==0)=' '
disp(char(strout))
% result:
% KIZNLXGNG AIZNNJSNDZI QIMQE MGS V OI
【第三题】猜数字
num = rand(1)*100%产生(0,100)随机数,服从均匀分布
num = ceil(num)%向上取亮皮最近敬渗差喊运的整数,落在[1,100]之间
i=0
flag=0
while i<7
a=input('请输入一个1-100的整数')
if a<num
disp('LOW')
elseif a>num
disp('HIGH')
else
disp('YOU WON')
flag=1
break
end
i=i+1
end
if flag==0
disp('YOU LOST')
end
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