小编use*_*831的帖子

下面是我的 String 类的代码。我想实现 reverse_iterator 和 rbegin() 和 rend() 方法。已粘贴分配方法的代码。String::reverse_iterator rbegin = str2.rbegin(); String::reverse_iterator rend = str2.rend(); for(String::reverse_iterator b = rbegin; b!= rend;++b) { cout<<*b; }

class String {//my custom string class

public:

    class iterator:public std::iterator<std::random_access_iterator_tag, char> {
    public:
        iterator():ch(NULL){}
        iterator(const iterator& it) : ch(it.ch) {}

        char& operator*() { return *ch; }
        iterator& operator++() {
            ch = ch+1;
            return *this;
        }
        bool operator==(const iterator& rhs) {
            return ch == rhs.ch;
        }
        bool operator!=(const iterator& rhs) {
            return ch != rhs.ch;
        } …