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Type: Posts; User: zio_mangrovia

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  1. Replies
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    Re: binary search tree

    Good idea, I'll try again to write code according to your suggestion.
    Thanks
  2. Replies
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    Re: binary search tree

    final.push_back(tree->D);

    This statement doesn't change algorithm complexity, right? It's O(1), right?
  3. Replies
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    Re: binary search tree

    you can't imagine how much you helped me to understand problem.
    I thought to this procedure and it Works.... after 2 daysssss


    struct node { // D is max dist. from node to leaf of same type...
  4. Replies
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    509

    Re: binary search tree

    I don't find to think the way using recursion to keep track of node type to compare, for example, to every leaf (which are at several levels)
    I think It's easy if I have to calculate this Properties...
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    binary search tree

    I need help because I'm not able to write code for this exercise:

    I have binary search tree where every node has label of integer type.
    Node is said even (odd) type if its label is even (odd)....
  6. Replies
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    584

    Re: pass to function

    I noted It's possible to manage <vector> even in this way:




    void printcode(volo* pp, int nn) {
    for (int i=0; i<nn; ++i) {
    cout << pp[i].codice << endl;
    cout << pp[i].num << endl;...
  7. Replies
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    Re: pass to function

    I don t understand what means here & symbol
  8. Replies
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    pass to function

    I'm making tests about <vector> and I want to pass it to function to insert some values, e.g.


    #include <iostream>
    #include <vector>
    #include <cstring>
    using namespace std;

    struct volo {...
  9. Re: implementation of binary search tree by class

    In solution A, It's right to define "insert" function in private section of class? Could I define it into public section? What advantages could I get?
  10. Re: sort vector of struct: segmentation fault

    Thanks for your precious suggestions.



    Thanks.
  11. Re: implementation of binary search tree by class

    I tested both ones and work but I'd like to know if It exists reason to choose one of them, I don't say about efficiency but just for RIGHT implementation choice.
  12. Re: sort vector of struct: segmentation fault

    I wrong.





    I wrong again.

    You are right both points.
  13. implementation of binary search tree by class

    I want to create a binary search tree by class so I thought to this one:



    struct node {
    int info;
    node *left, *right;

    node(int info):
    left(NULL),
  14. sort vector of struct: segmentation fault

    I want to sort vector which is composed by struct elements, but I don't understand because sort function gives segmentation fault. Where I'm making mistakes?


    #include <iostream>
    #include...
  15. Thread: STL list

    by zio_mangrovia
    Replies
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    520

    Re: STL list

    I tried with ddd but It often gives errors so I have to restart it again, so I decide to install new Debian machine to make exercises.
    I found out if I leave STL library and I use this code:



    ...
  16. Thread: STL list

    by zio_mangrovia
    Replies
    8
    Views
    520

    Re: STL list

    Thank you very much, It's best practise to initialise each list to NULL or It's automatically process in STL list library ?
  17. Thread: STL list

    by zio_mangrovia
    Replies
    8
    Views
    520

    Re: STL list

    Excuse me for my stupid question but I'm teaching myself C++ language in environment by old customized Debian Virtual Machine with g++ version 4.7, which is provided by italian university
  18. Thread: STL list

    by zio_mangrovia
    Replies
    8
    Views
    520

    STL list

    struct dati {
    int id;
    string cognome;
    };

    struct elem {
    int cc;
    list <dati> conto;
    };
  19. Replies
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    379

    Re: tree level

    I saw multiple versions and I would like to be sure It's right one.
  20. Replies
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    379

    tree level

    Can you confirm this code is right to calculate level of binary tree (tree depth) ?


    // albero vuoto = -1
    // livello albero min. = 0
    int tree_depth(Node* tree) {
    if (!tree) return -1;
    ...
  21. Replies
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    Re: struct to vector

    Thanks for your references.
    About this code
    vector<point> pp{temp}
    It uses the copy constructor ?
  22. Replies
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    937

    Re: struct to vector

    What means move semantics?
  23. Replies
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    Re: struct to vector

    here, I made a mistake to type "pushback".




    I don't remember, this statement defines pp as vector of 'point' struct elements and it uses copy constructor to copy temp to vector element?
  24. Replies
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    Re: struct to vector

    Yes; I did but I was interesting to method to make it and if It exists another way, like initialization lists which I don't remember.
  25. Replies
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    937

    struct to vector

    I have to allocate vector with several elements of 'point' type, where its values are collected by cin command.

    I have this structure:


    struct point {
    int x;
    int y;
    };
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