
[프로그래머스, Java] 핸드폰 번호 가리기
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CodingTest/Programmers
💡풀이class Solution { public String solution(String phone_number) { int index = phone_number.length() - 4; return "*".repeat(index) + phone_number.substring(index); }}💡풀이 2class Solution { public String solution(String phone_number) { int index = phone_number.length() - 4; StringBuilder sb = new StringBuilder("*".repeat(index)); return sb.append(phone_..