[20251031] PGM / LV2 / 가장 큰 수 / 강신지 #1284
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🧷 문제 링크
https://school.programmers.co.kr/learn/courses/30/lessons/42746
🧭 풀이 시간
20분
👀 체감 난이도
✏️ 문제 설명
주어진 숫자들을 이어 붙여 만들 수 있는 가장 큰 수를 문자열로 반환하는 문제
🔍 풀이 방법
숫자를 문자열로 변환한 뒤, 두 문자열 a,b의 순서를 (b+a) vs (a+b) 비교해 더 큰 쪽이 앞에 오도록 정렬
정렬된 문자열 배열의 첫 원소가 "0"이면 0 리턴. 아니라면 모두 이어붙여 리턴.
⏳ 회고
정답이 0일 경우를 고려해야 한다.