JAVA_LeetCode 2309_Greatest English Letter in Upper and Lower Case 풀이 class Solution { public String greatestLetter(String s) { // 문자를 따로 추출하고, 알파벳 내림차순으로 대/소문자를 체크해서 존재할경우 반환한다. Set set = new HashSet(); for(char ch : s.toCharArray()) set.add(ch); for(char ch = 'Z'; ch >= 'A'; ch--){ if(set.contains(ch) && set.contains((char)('a' + (ch - 'A')))) return "" + ch; } return ""; } } * 출처 https://leetcode.com/problems/greatest-english-letter-in-upper-and-lower-case...
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JAVA
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JAVA_GreatestEnglishLetterinUpperandLowerCase
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JAVA_LeetCode2309
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JAVA_LeetCode2309_GreatestEnglishLetterinUpperandLowerCase
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LeetCode2309_GreatestEnglishLetterinUpperandLowerCase
