Beginning with begin, end point to the beginning and end of the two elements of a palindrome, begin and end point values are compared, if not equal, returns false, otherwise begin to point to the next element end point to the previous element, and then to begin and end point values are compared until begin < end, finally returns true.-Beginning with begin, end point to the beginning and end of the two elements of a palindrome, begin and end point values are compared, if not equal, returns false, otherwise begin to point to the next element end point to the previous element, and then to begin and end point values are compared until begin <　end, finally returns true.