int main2()
{
const int max = 128;
char s[max];
while (read_word(cin, s, max)) {
cout << s << " is";
if (! is_palindrome2(s, strlen(s))) cout << " not";
cout << " a palindrome\n";
}
}
constexpr std::tuple<T, T, T> largest_square_palindrome(const T & max) {
static_assert(std::is_integral<T>::value, "T can only be integral");
T one = 0;
T two = 0;
T res = 0;
for (T lhs = max; lhs * max > res; --lhs) {
for (T rhs = max; rhs > lhs; --rhs) {
const auto product = lhs * rhs;
if (product > res && is_palindrome2(product)) {
one = lhs;
two = rhs;
res = product;
}
}
}
return std::make_tuple(res, one, two);
}
int main()
{
{
Node * p1 = new Node( 'a' );
Node * p2 = new Node( 'b' );
Node * p3 = new Node( 'c' );
Node * p4 = new Node( 'd' );
Node * p5 = new Node( 'c' );
Node * p6 = new Node( 'b' );
Node * p7 = new Node( 'a' );
p1->next = p2;
p2->next = p3;
p3->next = p4;
p4->next = p5;
p5->next = p6;
p6->next = p7;
std::cout << is_palindrome( p1 ) << std::endl;
std::cout << is_palindrome2( p1 ) << std::endl;
std::cout << is_palindrome3( p1 ) << std::endl;
}
{
Node * p1 = new Node( 'a' );
Node * p2 = new Node( 'b' );
Node * p3 = new Node( 'c' );
Node * p4 = new Node( 'c' );
Node * p5 = new Node( 'b' );
Node * p6 = new Node( 'a' );
p1->next = p2;
p2->next = p3;
p3->next = p4;
p4->next = p5;
p5->next = p6;
std::cout << is_palindrome( p1 ) << std::endl;
std::cout << is_palindrome2( p1 ) << std::endl;
std::cout << is_palindrome3( p1 ) << std::endl;
}
{
Node * p1 = new Node( 'a' );
Node * p2 = new Node( 'b' );
Node * p3 = new Node( 'a' );
p1->next = p2;
p2->next = p3;
std::cout << is_palindrome( p1 ) << std::endl;
std::cout << is_palindrome2( p1 ) << std::endl;
std::cout << is_palindrome3( p1 ) << std::endl;
}
{
Node * p1 = new Node( 'a' );
Node * p2 = new Node( 'a' );
p1->next = p2;
std::cout << is_palindrome( p1 ) << std::endl;
std::cout << is_palindrome2( p1 ) << std::endl;
std::cout << is_palindrome3( p1 ) << std::endl;
}
{
Node * p1 = new Node( 'a' );
std::cout << is_palindrome( p1 ) << std::endl;
std::cout << is_palindrome2( p1 ) << std::endl;
std::cout << is_palindrome3( p1 ) << std::endl;
}
{
std::cout << is_palindrome( nullptr ) << std::endl;
std::cout << is_palindrome2( nullptr ) << std::endl;
std::cout << is_palindrome3( nullptr ) << std::endl;
}
return 0;
}
