I am one of the computer science student. Everyone solve problem with a different or same method, ( but actually I dont know whether they use method or I dont know whether there are such common method to approach problem.)

• if there are common method, What is it ?
• If there are different method, which method are you using ?

All teacher give us problem which in simple form sometimes, but they donot introduce any approach or method(s) so that we cannot make a decision to choose the method then apply that one to problem , afterward find solution then write code.No help from teacher , push us to find method to solve homework. Ex: my friend is using no method , he says "I start to construct algorithm while I try to write prog."

I have found one method when I failed the course,

More accurately, my method: When I counter problem in language , I will get more paper and then ;

first, input/ output  step ; 
       my prog will take this / these there argument(s) and return namely X , 
       ex : in c, 
            input length is not known and at same type ,
                so I must use pointer 
            desired output is in form of package , 
                so use structure 
second, execution part    ;
   in that step , I am writing all step which are goes to final output 
       ex : in python ;
             1.) [ + , [- , 4 , [ * , 1 , 2 ]], 5]
             2.) [ + , [- , 4 , 2 ],5 ]
             3.) [ + , 2 , 5] 
             4.)  7      ==> return 7 
third, I will write test code 
       ex :    in c++
           input : append 3  4 5 6 vector_x remove 0 1 
           desired output  vector_x holds : 5 6       

• now, my other question is ; What is/are other method(s) which have/has been;

   used to construct class  :::: for  c++ , python, java  
  
  
   used to communicate classes / computers
  
  
   used for solving  embedded system problem  ::::: for c 
  

by other user?

• Some programmer uses generalized method without considering prog-language(java , perl .. ), what is this method ?

Why I wonder , because I learn if you dont costruct algorithm on paper, you may achieve your goal. Like no money no lunch , I can say no algorithm no prog

therefore , feel free when you write your own method , a way which is introduced by someone else but you are using and you find it is so efficient