...
const int NULL_INDEX = -1;

struct Node {
    char info;
    int next;
};

class LList1 {

private:
    Node free [4];

    // When more memory is called for, the array will double in size
    // returns true if reallocation of memory was successful
    bool doubleSize();
    .
    .
    .
}

bool LList1::doubleSize() {
    Node* newArray = new Node[this->length()*2];
    memcpy(newArray, free, this->length()*2);
    free = newArray;
    return true;
}

"free = newArray"