Type getKey(){ return key;}∥提取排序码 void setKey( const Type x){key=x;}/修改 Element<Type>& operator 赋值 Element<Type>&x)i key =x->key otherdata=x->otherdata;3 int operator==(Element<Type>&x) f return key ==x->key,) /J this ==X int operator <=(Element<Type>&x) return key=x->key;}/判this≤x int operator <(Element<Type>&x) freturn key <x->key;) /J this <xType getKey ( ) { return key; } //提取排序码 void setKey ( const Type x ) { key = x; } //修改 Element<Type> & operator = //赋值 ( Element<Type>& x ) { key = x->key; otherdata = x->otherdata; } int operator == (Element<Type>& x ) { return key == x->key; } //判this == x int operator <= (Element<Type>& x ) { return key <= x->key; } //判this  x int operator < (Element<Type>& x ) { return key < x->key; } //判this < x