Implement the function below.  void swap(int pos1, int pos2){}

Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
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Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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Question

Implement the function below. 

void swap(int pos1, int pos2){}

Initial code to be completed:

class ArrayList : public List { 
    int* array;
    int index;
    int capacity;
    
    void dyn_all_add(){
      int cap = ceil(capacity * 1.5);
      array = (int*)realloc(array,cap * sizeof(int));
      capacity = cap;
    }

    void dyn_all_rem(){
      int cap = capacity - (capacity/3);
      array = (int*)realloc(array,cap * sizeof(int));
      capacity = cap;
    }

    public:
        // CONSTRUCTOR
        ArrayList() {
          capacity = 4;
          array = (int*)malloc(capacity);
          index = 0;
        }

        int add(int num) {
          if (index == capacity){
              dyn_all_add();
            }
            *(array + index) = num;
            index++;
            return index;
        }

        int get(int pos){
          if (pos-1 < index){
            return *(array + pos-1);
          }  
          return -1;
        }
        
        int size(){
            return index;
        }

        void swap(int pos1, int pos2){
          
        }

        // WARNING! Do not modify the print method.
        // Doing so will nullify your score for this activity.
        void print() {
            cout << "[";
            for (int i = 0; i < capacity; i++) {
                if (i < index) {
                    cout << *(array + i);
                } else {
                    cout << "?";
                }
                
                if (i != capacity - 1) {
                    cout << ", ";
                }
            }
            cout << "]" << endl;
        }
};

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