Thank you for the great lecture for free I came here to review Java that I learned in school I feel like I filled in the missing links by learning the concepts while refactoring step by step ㅎㅎ Arrays are a little difficult, and I had a hard time using the 2D array with the loop in particular (I solved it with a different answer from the answer given by Yeong-han ㅋㅋ) but the method was so much fun!!! I will also support Yeong-han's path as an educator!!! Thank you again for the great lecture!!!~~~!!!!!~!~!~!!~