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.config/Code/User/History/5797a381/c9bR.cpp

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+/*
+Rafay Ahmad
+23I-2526
+*/
+#include <iostream>
+using namespace std;
+
+
+class ResizableArray{
+    int* arr;
+    int size;
+    int i;
+
+    void increaseCapacity(){
+        int* newArr = new int[size*2];
+        for(int j=0;j<size;j++){
+            newArr[j] = arr[j];
+        }
+        delete arr;
+        arr = newArr;
+        size *= 2;
+    }
+
+    void decreaseCapacity(){
+        int* newArr = new int[size/2];
+        for(int j=0;j<size;j++){
+            newArr[j] = arr[j];
+        }
+        delete arr;
+        arr = newArr;
+        size /= 2;
+    }
+
+public:
+    ResizableArray() : size(10), i(0){
+        arr = new int[size];
+    }
+
+    void add(int value){
+        if(i >= size) increaseCapacity();
+        arr[i] = value;
+        i++;
+    }
+
+    bool insert(int index, int value){
+        if(index < 0 || index > size) return false;
+        else{
+            if(i >= size) increaseCapacity();
+            for(int j=i;j>=index;j--){
+                arr[j+1] = arr[j];
+            }
+            arr[index] = value;
+            i++;
+        }
+        return true;
+    }
+
+    bool remove(int index){
+        if(index < 0 || index > size) return false;
+        else{
+            for(int j=index;j<i-1;j++){
+                arr[j] = arr[j+1];
+            }
+            i--;
+            if(i < size/4) decreaseCapacity();
+        }
+        return true;
+    }
+
+    bool updateElement(int index, int value){
+        if(index < 0 || index > size) return false;
+        arr[index] = value;
+        return true;
+    }
+
+    int get(int index) const{
+        if(index < 0 || index > size) return -1;
+        return arr[index];
+    }
+
+    int getSize() const{
+        return i;
+    }
+
+    int capacity() const{
+        return size;
+    }
+
+    void clear(){
+        delete arr;
+        arr = new int[1];
+        i = 0;
+    }
+
+    void reverse(){
+        for(int j=0;j<=i/2;j++){
+            int temp = arr[j];
+            arr[j] = arr[i-j];
+            arr[i-j] = temp;
+        }
+    }
+
+    int find(int value) const{
+        for(int j=0;j<i;j++){
+            if(arr[j] == value) return j;
+        }
+        return -1;
+    }
+};
+
+
+int main(){
+
+    ResizableArray arr;
+
+    arr.add(4);
+    arr.add(3);
+    arr.add(2);
+    arr.add(5);
+    arr.add(6);
+
+    
+
+    for(int i=0;i<arr.getSize();i++){
+        cout<<arr.get(i)<<endl;
+    }
+    arr.reverse();
+    for(int i=0;i<arr.getSize();i++){
+        cout<<arr.get(i)<<endl;
+    }
+
+    return 0;
+}