์ธ์ ˆ๋ฏธ์˜€๋˜๊ฒƒ
(์ž๋ฐ”) Collection๊ณผ ArrayList ์–ด๋ ˆ์ด ๋ฆฌ์ŠคํŠธ ์ •๋ฆฌ (feat.์ œ๋„ค๋ฆญ ๊ธฐ๋ฒ•)
์ƒ๋‹จ์œผ๋กœ