added vector class

vector.cpp

@@ -0,0 +1,98 @@
+#include <bits/stdc++.h>
+using namespace std;
+
+
+#define ll long long int
+#define vi vector<int>
+#define vvi vector<vi>
+#define pb push_back
+#define fo(i,a,b) for(int i=a ; i<b ; i++)
+#define foe(i,a,b) for(int i=a ; i<=b ; i++)
+#define endl '\n'
+#define ff first
+#define ss second
+#define MOD 1000000007
+template <typename P> class vectorClass
+{
+    P* a;
+    int size,current;
+
+public:
+    vectorClass()
+    {
+        a = new P[1];
+        size = 1;
+        current = 0;
+    }
+    void push(P data)
+    {
+        if (current == size) {
+            P* temp = new P[2 * size];
+
+            for (int i = 0; i <size; i++) {
+                temp[i] = a[i];
+            }
+
+            delete[] a;
+            size *= 2;
+            a = temp;
+        }
+
+        a[current] = data;
+        current++;
+    }
+
+    void push(int data, int index)
+    {
+        if (index == size)
+            push(data);
+        else
+            a[index] = data;
+    }
+
+
+    P get(int index)
+    {
+        if (index < current)
+            return a[index];
+    }
+
+
+    void pop() { current--; }
+    int vecsize() { return current; }
+    int getcapacity() { return size; }
+
+    void print()
+    {
+        for (int i = 0; i < current; i++) {
+            cout << a[i] << " ";
+        }
+        cout << endl;
+    }
+};
+
+
+int main()
+{
+    vectorClass<int> v;
+    v.push(1);
+    v.push(2);
+    v.push(3);
+    v.push(4);
+    v.push(5);
+
+    cout << "Vector size : " << v.vecsize() << endl;
+    cout << "Vector capacity : " << v.getcapacity() << endl;
+    cout << "Vector elements : ";
+    v.print();
+    v.pop();
+    cout << "Vector elements after one pop: ";
+    v.print();
+
+
+    return 0;
+}
+
+
+
+