diff --git a/include/boost/algorithm/is_palindrome.hpp b/include/boost/algorithm/is_palindrome.hpp index cc63e18..0988110 100644 --- a/include/boost/algorithm/is_palindrome.hpp +++ b/include/boost/algorithm/is_palindrome.hpp @@ -35,7 +35,7 @@ namespace boost { namespace algorithm { /// For other sequences function will return false. /// Complexity: O(N). template -bool is_palindrome(BidirectionalIterator begin, BidirectionalIterator end, Predicate p ) +bool is_palindrome(BidirectionalIterator begin, BidirectionalIterator end, Predicate p) { if(begin == end) { @@ -63,7 +63,7 @@ bool is_palindrome(BidirectionalIterator begin, BidirectionalIterator end, Predi /// \return true if the entire sequence is palindrome /// /// \param begin The start of the input sequence -/// \param end One past the end of the input sequence +/// \param end One past the end of the input sequence /// /// \note This function will return true for empty sequences and for palindromes. /// For other sequences function will return false. @@ -71,26 +71,8 @@ bool is_palindrome(BidirectionalIterator begin, BidirectionalIterator end, Predi template bool is_palindrome(BidirectionalIterator begin, BidirectionalIterator end) { - if(begin == end) - { - return true; - } - - --end; - while(begin != end) - { - if(!(*begin == *end)) - { - return false; - } - ++begin; - if(begin == end) - { - break; - } - --end; - } - return true; + return is_palindrome(begin, end, + std::equal_to::value_type> ()); } /// \fn is_palindrome ( const R& range ) @@ -122,7 +104,6 @@ bool is_palindrome(const R& range, Predicate p) return is_palindrome(boost::begin(range), boost::end(range), p); } - /// \fn is_palindrome ( const char* str ) /// \return true if the entire sequence is palindrome /// @@ -138,7 +119,6 @@ bool is_palindrome(const char* str) return is_palindrome(str, str + strlen(str)); } - /// \fn is_palindrome ( const char* str, Predicate p ) /// \return true if the entire sequence is palindrome /// @@ -155,7 +135,6 @@ bool is_palindrome(const char* str, Predicate p) return true; return is_palindrome(str, str + strlen(str), p); } - }} #endif // BOOST_ALGORITHM_IS_PALINDROME_HPP