Final review (day3)

2022.6.22DAY584

Today I saw 《 data structure 》 The last part of the stack and queue . Stack is usually used in recursion , Then there is the rule of transforming infix expression into suffix expression ： Traverse every number and symbol of infix expression from left to right , If it's digital, it's output , That's part of the suffix expression ; If it's a sign , Then determine its priority with the stack top symbol , If it is a right parenthesis or a symbol whose priority is not higher than the top of the stack, the top of the stack elements are out of the stack in turn and output , And stack the current symbols , Until the final output suffix expression . Reviewed 《 Discrete Mathematics 》 The last part of the first chapter , When looking at exercises , I still won't do what I haven't done before , Listen to the teacher say that the difficulty of the exam is less than that of the homework （ At least not more than the difficulty of the operation ）. And finally 《 Digital circuit and logic design 》, I did a comprehensive exercise , I find that what I can't do is the knowledge points behind . At this critical review moment, nothing distracts me more than learning general courses , Not arranged well in the early stage , Now I can only brush by myself .

read ：《 Big talk data structure 》120 page

English ： Read 10 Minute English

Programming ：

public class Fu {
    private void show(){
        System.out.println("Fu in show() Method is called ");

    }
    public void method(){
        System.out.println("Fu in method() Method is called ");
    }
}

public class Zi extends Fu 
{
    
    public void method(){
        System.out.println("Fu Chinese method call "); 
    }

}

Summary ： Private methods cannot be overridden （ Subclasses of private members of a parent class cannot be inherited ）

            Subclass method access Permission cannot be lower （public > Default > private ）