ex) int [,] arr = new int[5,5];

์ด๋ ‡๊ฒŒ ํ–ˆ์„๋•Œ ์ฒซ๋ฒˆ์งธ๊บผ ๋ฐฐ์—ด ํ†ต์งธ๋กœ ๋ชป๋ฐ›์•„์˜ด?