From f279107065146a4940f5e73602a1c3c09e58b31d Mon Sep 17 00:00:00 2001
From: Santo Cariotti <dcariotti24@gmail.com>
Date: Sun, 18 Oct 2020 18:56:43 +0200
Subject: chore: name of first year folder

---
 I_anno/Programmazione_2/exercises/exam_08_10_14.cc | 202 ---------------------
 1 file changed, 202 deletions(-)
 delete mode 100644 I_anno/Programmazione_2/exercises/exam_08_10_14.cc

(limited to 'I_anno/Programmazione_2/exercises/exam_08_10_14.cc')

diff --git a/I_anno/Programmazione_2/exercises/exam_08_10_14.cc b/I_anno/Programmazione_2/exercises/exam_08_10_14.cc
deleted file mode 100644
index c9c33be..0000000
--- a/I_anno/Programmazione_2/exercises/exam_08_10_14.cc
+++ /dev/null
@@ -1,202 +0,0 @@
-#include<iostream>
-
-using namespace std;
-
-template<class H> class MultiBST {
-    virtual MultiBST<H>* ins(H x) = 0;
-    virtual int multiplicity(H x) = 0;
-    virtual void inorder() = 0;
-};
-
-template<class H>
-class node {
-public:
-    node(H val) : _key{val}, _parent{nullptr}, _left{nullptr}, _right{nullptr}, _rk{1} {}
-    H& key() { return _key; }  
-    const H& key() const { return _key; }  
-    node<H>*& parent() { return _parent; }
-    const node<H>*& parent() const { return _parent; }
-    node<H>*& left() { return _left; }
-    const node<H>*& left() const { return _left; }
-    node<H>*& right() { return _right; }
-    const node<H>*& right() const { return _right; }
-    int& rk() { return _rk; }
-    const int& rk() const { return _rk; }
-private:
-    H _key;
-    node<H>* _parent;
-    node<H>* _left;
-    node<H>* _right;
-    int _rk;
-};
-
-template<class H>
-class MyMultiBST : public MultiBST<H> {
-public:
-    MyMultiBST() : _root{nullptr} {}
-    node<H>*& root() { return _root; }
-    const node<H>*& root() const { return _root; }
-    int multiplicity(H x) {
-        auto elem = _search(x);
-        if(elem)
-            return elem->rk();
-        return 0;
-    }
-    MyMultiBST<H>* ins(H x) {
-        auto iter = _search(x);
-        if(iter) {
-            iter->rk() = iter->rk()+1;
-        } else {
-            iter = _root;
-            node<H>* y{nullptr};
-
-            while(iter) {
-                y = iter;
-                if(iter->key() > x) 
-                    iter = iter->left();
-                else
-                    iter = iter->right();
-            }
-
-            node<H>* nodus = new node<H>{x};
-            nodus->parent() = y;
-            if(!y) {
-                _root = nodus;
-            } else if(y->key() > x) {
-                y->left() = nodus;
-            } else {
-                y->right() = nodus;
-            }
-        }
-
-        return this;
-    }
-    void inorder() {
-       _inorder(_root);
-    }
-    MyMultiBST<H>* del(H x) {
-        node<H>* y;
-        node<H>* z = _search(x);
-
-        if(!z) return this;
-
-        if(z->rk() > 1) {
-            z->rk() = z->rk()-1;
-        } else {
-            if(!z->left()) {
-                _transplant(z, z->right());
-            } else if(!z->right()) {
-                _transplant(z, z->left());
-            } else {
-                y = _min(z->right());
-                if(y->parent() != z) {
-                    _transplant(y, y->right());
-                    y->right() = z->right();
-                    y->right()->parent() = y;
-                }
-                _transplant(z, y);
-                y->left() = z->left();
-                y->left()->parent() = y;
-                delete z;
-            }
-        }
-
-        return this;
-    }
-    node<H>* predecessor(H x) {
-        auto iter = _search(x);
-        if(!iter) return nullptr;
-        if(iter->left())
-            return _max(iter->left());
-
-        auto y = iter->parent();
-        while(y && iter == y->left()) {
-            iter = y;
-            y = y->parent();
-        }
-
-        return y;
-    }
-    int rank(H x) {
-        auto iter = predecessor(x);
-        int sum{1};
-        while(iter) {
-            sum+=iter->rk();
-            iter = predecessor(iter->key());
-        }
-        return sum;
-    }
-private:
-    void _transplant(node<H>* u, node<H>* v) {
-        if(!u->parent()) _root = v;
-        else if(u == u->parent()->left())
-            u->parent()->left() = v;
-        else
-            u->parent()->right() = v;
-
-        if(v)
-            v->parent() = u->parent();
-    }
-    node<H>* _max(node<H>* x) {
-        if(!x) return nullptr;
-
-        auto iter = x;
-        while(iter->right()) {
-            iter = iter->right();
-        }
-
-        return iter;
-    }
-    node<H>* _min(node<H>* x) {
-        if(!x) return nullptr;
-
-        auto iter = x;
-        while(iter->left()) {
-            iter = iter->left();
-        }
-
-        return iter;
-    }
-    void _inorder(node<H>* p) {
-        if(p) {
-            _inorder(p->left());
-            for(int i = 0; i < p->rk(); ++i) {
-                cout << p->key() << ' ';
-            }
-            _inorder(p->right());
-        }
-    }
-    node<H>* _search(H val) {
-        auto iter = _root;
-        while(iter && iter->key() != val) {
-            if(iter->key() > val)
-                iter = iter->left();
-            else
-                iter = iter->right();
-        }
-
-        return iter;
-    }
-    node<H>* _root;
-};
-
-int main() {
-    MyMultiBST<int>* t = new MyMultiBST<int>{};
-
-    for(auto const& i : {10, 7, 7, 23, 30, 4, 1, 5, 9, 5, 1, 7, 1, 9})
-        t->ins(i);
-
-    t->inorder();
-    cout << '\n';
-    for(auto const& i : {5, 7, 17})
-        cout << i << ": " << t->multiplicity(i) << endl;
-
-    for(auto const& i : {7, 4, 23, 7, 7})
-        t->del(i);
-    t->inorder();
-    cout << '\n';
-    for(auto const& i: {5, 9, 30})
-        cout << t->rank(i) << ' ';
-    delete t;
-    return 0;
-}
-- 
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