[20251117] PGM / LV2 / 큰 수 만들기 / 강신지 #1435
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🧷 문제 링크
https://school.programmers.co.kr/learn/courses/30/lessons/42883
🧭 풀이 시간
40분
👀 체감 난이도
✏️ 문제 설명
주어진 숫자 문자열에서 k개의 숫자를 제거해 만들 수 있는 가장 큰 수를 구하는 문제
🔍 풀이 방법
스택처럼 작동하는 문자열에 숫자를 하나씩 넣되, 새 숫자가 이전보다 크면 k가 0이 될 때까지 이전 숫자를 삭제.
모든 숫자를 처리한 뒤 k가 남으면 뒤에서 삭제하고, 남은 숫자들을 이어 붙여 최종 결과 반환
⏳ 회고
뭔가 너무 감이 안와서 힌트봄... stringbuilder를 스택처럼 쓸 수 있구나