24 lines
840 B
Java
24 lines
840 B
Java
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// [문제 링크]: https://school.programmers.co.kr/learn/courses/30/lessons/72410?language=java
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class Solution {
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public String solution(String new_id) {
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String answer = "";
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answer = new_id.toLowerCase().replaceAll("[^a-z0-9[-]_[.]]","").replaceAll("[.]+",".");
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if(answer.charAt(0) == '.') answer = answer.substring(1);
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int len = answer.length();
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if(len == 0) answer = "a";
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len = answer.length();
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if(len >= 16) answer = answer.substring(0,15);
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while(answer.charAt(answer.length()-1)=='.'){
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answer = answer.substring(0,answer.length()-1);
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}
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len = answer.length();
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if (len <= 2){
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for(int i = 0; i < 3-len; i++){
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answer += answer.charAt(len-1);
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}
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}
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return answer;
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}
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}
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