這裏例如 in = "a b\nab c\ndd";
out = "a b\nb c\ndd"
Here is my C code
while(c=getchar()!=EOF){
if(c==' '){
while((c1=getchar()) == ' '); // ignore all other contiguous blank
putchar(c
我想看看是否存在一個URL。這裏是我的代碼這樣做: validate :registered_domain_name_exists
private
def registered_domain_name_exists
if url and url.match(URI::regexp(%w(http https))) then
begin # check header re