This is a simple implementation of an ArrayList in C using a struct, a pointer to the struct and a pointer to the array. The array is static and the size of the array is defined when the ArrayList is created.

• ArrayList* ArrayCreate(int n): Creates an ArrayList with a size of n.

• void ArrayAppendFirst(ArrayList* list, int value): Add an element to the beginning of the list.

• void ArrayAppendLast(ArrayList* list, int value): Appends a value to the end of the array.

• void ArrayAppend(ArrayList* list, int value, int index): Appends a value to the array at the specified index.

• void ArrayDelete(ArrayList* list, int index): Deletes the element at the given index.

• void ArrayDeleteFirst(ArrayList* list): Deletes the first element of the array.

• void ArrayDeleteLast(ArrayList* list): Deletes the last element of the array.

• void ArrayPrint(ArrayList* list): Prints the array

• void ArrayFree(ArrayList* list): Frees the memory

• char* ArrayToString(ArrayList* list): Returns a string representation of the array

// Create an array list with maximum 10 value capacity. ArrayList* list = ArrayCreate(10); // Append a value to the last of the array list. ArrayAppendLast(list, 10); ArrayAppendLast(list, 20); ArrayAppendLast(list, 30); ArrayAppendLast(list, 40); // Append a value to the first of the array list. ArrayAppendFirst(list, 5); // Append a value to the array list at the specified index. ArrayAppend(list, 25, 2); // Print the array list. ArrayPrint(list); // Delete a value from the array list at the specified index. ArrayDelete(list, 3); // Delete a value from the first of the array list. ArrayDeleteFirst(list); // Delete a value from the last of the array list. ArrayDeleteLast(list); // Print the array list. ArrayPrint(list);

And the output is:

5 10 25 20 30 40 10 25 30

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