-(int)randomInRange:(NSRange)range except:(NSArray*)exceptionArray{

int r ;

BOOL isSame = TRUE;

while (isSame) {

isSame = FALSE;

r = rand() % range.length + range.location;

for (NSNumber *number in exceptionArray) {

if([number intValue] == r){

isSame = TRUE;

break;

}

}

}

return r;

}