The skill requirement in this class absolutely peaked with the final part of Assignment 4, which was to copy a group of characters from one location to another, including when the copy and paste ranges overlap. Thing is, we weren't allowed to use an array to save the numbers we were copying over, so it took me quite a while to figure out another solution. A few hours and cans of Sprite later, I realized that you could write the first part of the copied code to the last part of the pasted code in reverse, then reverse the part of the code that overlaps with the copy/paste to make the entire paste section reversed, then reverse the ENTIRE paste section to complete the function. I still have no idea if that was the intended method, but I felt like a genius after figuring it out.