hdu1287

为什么80%的码农都做不了架构师？>>>   

:::--->    a = b ^ c —-> c = a ^ b b = a ^ c,就是异或递推的关系。

http://acm.hdu.edu.cn/showproblem.php?pid=1287

View Code

// a = b ^ c —-> c = a ^ b b = a ^ c
#include " iostream "
#include " math.h "
using namespace std;
int main()
{
int n,i;
int a[ 1000 ];
char ch;

while (cin >> n)
{
for (i = 0 ;i < n;i ++ )
scanf( " %d " , & a[i]);

int count = 0 ;
char xx;
for (ch = ' A ' ; ch <= ' Z ' ; ++ ch)
{
count = 0 ;
for (i = 0 ; i < n; i ++ )
{
xx = a[i] ^ ch;
if (xx <= ' Z ' && xx >= ' A ' ) count ++ ;
}
if (count == n) break ;

}

for (i = 0 ;i < n;i ++ )
{
printf( " %c " ,a[i] ^ ch);
}
printf( " \n " );
}

return 0 ;
}

转载于:https://my.oschina.net/garyun/blog/602968