chore: name of first year folder

1 files changed, 50 insertions, 0 deletions

diff --git a/1_anno/Programmazione_2/data_structures/stack_w_array.cc b/1_anno/Programmazione_2/data_structures/stack_w_array.cc
new file mode 100644
index 0000000..c20db90
--- /dev/null
+++ b/1_anno/Programmazione_2/data_structures/stack_w_array.cc
@@ -0,0 +1,50 @@
+#include<iostream>
+
+using namespace std;
+
+template<class H>
+class stack {
+public:
+    stack(int n) : _size{n}, _top{-1} {
+        _arr = new H[n];
+    }
+    ~stack() {
+        delete _arr;
+    }
+    bool is_empty() {
+        return _top == -1;
+    }
+    bool is_full() {
+        return _top == _size-1;
+    }
+    stack<H>* push(H x) {
+        if(!is_full()) {
+            _arr[++_top] = x;
+        }
+        return this;
+    }
+    H pop() {
+        if(is_empty()) 
+            return -1;
+        _top--;
+        return _arr[_top+1];
+    }
+private:
+    int _size;
+    H* _arr;
+    short _top;
+};
+
+int main() {
+    stack<int>* s = new stack<int>{7};
+
+    s->push(15)->push(6)->push(2)->push(9)->push(17)->push(3);
+    cout << s->pop() << '\n';
+    s->push(18)->push(19)->push(12);
+
+    for(int i = 0; i < 7; ++i)
+        cout << s->pop() << ' ';
+
+    delete s;
+    return 0;
+}