<div id="readability-page-1" class="page"><div id="root"><div><div><a href="https://velog.io/"><svg width="192" height="192" viewBox="0 0 192 192" fill="currentColor"><path fill-rule="evenodd" clip-rule="evenodd" d="M24 0H168C181.255 0 192 10.7451 192 24V168C192 181.255 181.255 192 168 192H24C10.7451 192 0 181.255 0 168V24C0 10.7451 10.7451 0 24 0ZM49 57.9199V65.48H67L80.6799 142.52L98.5 141.26C116.02 119.06 127.84 102.44 133.96 91.3999C140.2 80.24 143.32 70.9399 143.32 63.5C143.32 59.0601 142 55.7 139.36 53.4199C136.84 51.1399 133.66 50 129.82 50C122.62 50 116.62 53.0601 111.82 59.1799C116.5 62.3 119.68 64.8799 121.36 66.9199C123.16 68.8401 124.06 71.4199 124.06 74.6599C124.06 80.0601 122.44 86.1799 119.2 93.02C116.08 99.8601 112.66 105.92 108.94 111.2C106.54 114.56 103.48 118.7 99.76 123.62L88.0601 57.2C87.1001 52.3999 84.1001 50 79.0601 50C76.78 50 72.3999 50.96 65.9199 52.8799C59.4399 54.6799 53.8 56.3601 49 57.9199Z" fill="currentColor"></path></svg></a><p><a href="https://velog.io/@psj0810/posts"><span>psj.log</span></a></p></div><div><a href="https://velog.io/notifications"><svg width="24" height="24" viewBox="0 0 24 24"><g id="Icon_Notification"><path id="notifications" d="M4 19V17H6V10C6 8.61667 6.41667 7.3875 7.25 6.3125C8.08333 5.2375 9.16667 4.53333 10.5 4.2V3.5C10.5 3.08333 10.6458 2.72917 10.9375 2.4375C11.2292 2.14583 11.5833 2 12 2C12.4167 2 12.7708 2.14583 13.0625 2.4375C13.3542 2.72917 13.5 3.08333 13.5 3.5V4.2C14.8333 4.53333 15.9167 5.2375 16.75 6.3125C17.5833 7.3875 18 8.61667 18 10V17H20V19H4ZM12 22C11.45 22 10.9792 21.8042 10.5875 21.4125C10.1958 21.0208 10 20.55 10 20H14C14 20.55 13.8042 21.0208 13.4125 21.4125C13.0208 21.8042 12.55 22 12 22ZM8 17H16V10C16 8.9 15.6083 7.95833 14.825 7.175C14.0417 6.39167 13.1 6 12 6C10.9 6 9.95833 6.39167 9.175 7.175C8.39167 7.95833 8 8.9 8 10V17Z" fill="currentColor"></path></g></svg></a><a href="/search?username=psj0810"><svg width="24" height="24" viewBox="0 0 24 24"><g id="Icon_Search"><path id="search" d="M19.3256 20.7122L13.5174 14.9041C13.0116 15.3227 12.4231 15.6495 11.752 15.8847C11.0801 16.1205 10.3692 16.2384 9.61919 16.2384C7.77035 16.2384 6.20477 15.5972 4.92244 14.3149C3.64081 13.0333 3 11.468 3 9.61919C3 7.77035 3.63663 6.20477 4.90988 4.92244C6.18314 3.64081 7.74419 3 9.59302 3C11.4593 3 13.0336 3.64081 14.3159 4.92244C15.5976 6.20477 16.2384 7.77035 16.2384 9.61919C16.2384 10.3692 16.1208 11.0798 15.8857 11.7509C15.6499 12.4228 15.3227 13.0203 14.9041 13.5436L20.7384 19.3517C20.9128 19.5262 21 19.7442 21 20.0058C21 20.2674 20.9041 20.5029 20.7122 20.7122C20.5203 20.9041 20.2894 21 20.0194 21C19.7487 21 19.5174 20.9041 19.3256 20.7122ZM9.61919 14.2762C10.9099 14.2762 12.0087 13.8227 12.9157 12.9157C13.8227 12.0087 14.2762 10.9099 14.2762 9.61919C14.2762 8.31105 13.8227 7.20767 12.9157 6.30907C12.0087 5.41116 10.9099 4.96221 9.61919 4.96221C8.31105 4.96221 7.20802 5.41116 6.31012 6.30907C5.41151 7.20767 4.96221 8.31105 4.96221 9.61919C4.96221 10.9099 5.41151 12.0087 6.31012 12.9157C7.20802 13.8227 8.31105 14.2762 9.61919 14.2762Z" fill="currentColor"></path></g></svg></a></div></div><div><div><a href="https://velog.io/"><svg width="192" height="192" viewBox="0 0 192 192" fill="currentColor"><path fill-rule="evenodd" clip-rule="evenodd" d="M24 0H168C181.255 0 192 10.7451 192 24V168C192 181.255 181.255 192 168 192H24C10.7451 192 0 181.255 0 168V24C0 10.7451 10.7451 0 24 0ZM49 57.9199V65.48H67L80.6799 142.52L98.5 141.26C116.02 119.06 127.84 102.44 133.96 91.3999C140.2 80.24 143.32 70.9399 143.32 63.5C143.32 59.0601 142 55.7 139.36 53.4199C136.84 51.1399 133.66 50 129.82 50C122.62 50 116.62 53.0601 111.82 59.1799C116.5 62.3 119.68 64.8799 121.36 66.9199C123.16 68.8401 124.06 71.4199 124.06 74.6599C124.06 80.0601 122.44 86.1799 119.2 93.02C116.08 99.8601 112.66 105.92 108.94 111.2C106.54 114.56 103.48 118.7 99.76 123.62L88.0601 57.2C87.1001 52.3999 84.1001 50 79.0601 50C76.78 50 72.3999 50.96 65.9199 52.8799C59.4399 54.6799 53.8 56.3601 49 57.9199Z" fill="currentColor"></path></svg></a><p><a href="https://velog.io/@psj0810/posts"><span>psj.log</span></a></p></div><div><a href="https://velog.io/notifications"><svg width="24" height="24" viewBox="0 0 24 24"><g id="Icon_Notification"><path id="notifications" d="M4 19V17H6V10C6 8.61667 6.41667 7.3875 7.25 6.3125C8.08333 5.2375 9.16667 4.53333 10.5 4.2V3.5C10.5 3.08333 10.6458 2.72917 10.9375 2.4375C11.2292 2.14583 11.5833 2 12 2C12.4167 2 12.7708 2.14583 13.0625 2.4375C13.3542 2.72917 13.5 3.08333 13.5 3.5V4.2C14.8333 4.53333 15.9167 5.2375 16.75 6.3125C17.5833 7.3875 18 8.61667 18 10V17H20V19H4ZM12 22C11.45 22 10.9792 21.8042 10.5875 21.4125C10.1958 21.0208 10 20.55 10 20H14C14 20.55 13.8042 21.0208 13.4125 21.4125C13.0208 21.8042 12.55 22 12 22ZM8 17H16V10C16 8.9 15.6083 7.95833 14.825 7.175C14.0417 6.39167 13.1 6 12 6C10.9 6 9.95833 6.39167 9.175 7.175C8.39167 7.95833 8 8.9 8 10V17Z" fill="currentColor"></path></g></svg></a><a href="/search?username=psj0810"><svg width="24" height="24" viewBox="0 0 24 24"><g id="Icon_Search"><path id="search" d="M19.3256 20.7122L13.5174 14.9041C13.0116 15.3227 12.4231 15.6495 11.752 15.8847C11.0801 16.1205 10.3692 16.2384 9.61919 16.2384C7.77035 16.2384 6.20477 15.5972 4.92244 14.3149C3.64081 13.0333 3 11.468 3 9.61919C3 7.77035 3.63663 6.20477 4.90988 4.92244C6.18314 3.64081 7.74419 3 9.59302 3C11.4593 3 13.0336 3.64081 14.3159 4.92244C15.5976 6.20477 16.2384 7.77035 16.2384 9.61919C16.2384 10.3692 16.1208 11.0798 15.8857 11.7509C15.6499 12.4228 15.3227 13.0203 14.9041 13.5436L20.7384 19.3517C20.9128 19.5262 21 19.7442 21 20.0058C21 20.2674 20.9041 20.5029 20.7122 20.7122C20.5203 20.9041 20.2894 21 20.0194 21C19.7487 21 19.5174 20.9041 19.3256 20.7122ZM9.61919 14.2762C10.9099 14.2762 12.0087 13.8227 12.9157 12.9157C13.8227 12.0087 14.2762 10.9099 14.2762 9.61919C14.2762 8.31105 13.8227 7.20767 12.9157 6.30907C12.0087 5.41116 10.9099 4.96221 9.61919 4.96221C8.31105 4.96221 7.20802 5.41116 6.31012 6.30907C5.41151 7.20767 4.96221 8.31105 4.96221 9.61919C4.96221 10.9099 5.41151 12.0087 6.31012 12.9157C7.20802 13.8227 8.31105 14.2762 9.61919 14.2762Z" fill="currentColor"></path></g></svg></a></div></div><div><div><div><p><span><a href="https://velog.io/@psj0810/posts">Psj</a></span><span>·</span><span>약 8시간 전</span></p></div></div><div><p>0</p><div></div></div><div><h2><a href="/@psj0810/series/코딩테스트">코딩테스트</a></h2><svg width="32" height="48" fill="currentColor" viewBox="0 0 32 48"><path fill="currentColor" d="M32 0H0v48h.163l16-16L32 47.836V0z"></path></svg><div><div><svg stroke="currentColor" fill="currentColor" stroke-width="0" viewBox="0 0 24 24" height="1em" width="1em" xmlns="http://www.w3.org/2000/svg"><path d="M7 10l5 5 5-5z"></path></svg><p>목록 보기</p></div><div><p>28</p><p>/</p><p>30</p></div></div></div></div><div><p><img src="https://velog.velcdn.com/images/psj0810/post/904a883c-a428-40ba-a09b-5a996032d6a3/image.png"></p>
<p>내풀이</p>
<pre><code><span>class</span> <span>Solution</span> <span>{</span>
    <span>public</span> <span>int</span> <span>solution</span><span>(</span><span>String</span> message<span>)</span> <span>{</span>
        <span>int</span> answer <span>=</span> <span>0</span><span>;</span>
        <span>int</span> count <span>=</span> <span>1</span><span>;</span>

        <span>char</span><span>[</span><span>]</span> arr <span>=</span> message<span>.</span><span>toCharArray</span><span>(</span><span>)</span><span>;</span>

        <span>while</span><span>(</span>count<span>&lt;</span>arr<span>.</span>length<span>)</span><span>{</span>
            count<span>++</span><span>;</span>
        <span>}</span>
        answer <span>=</span> count<span>*</span><span>2</span><span>;</span>
        <span>return</span> answer<span>;</span>
    <span>}</span>
<span>}</span></code></pre>
<p>다른사람풀이</p>
<pre><code><span>class</span> <span>Solution</span> <span>{</span>
    <span>public</span> <span>int</span> <span>solution</span><span>(</span><span>String</span> message<span>)</span> <span>{</span>
        <span>return</span> message<span>.</span><span>length</span><span>(</span><span>)</span><span>*</span><span>2</span><span>;</span>
    <span>}</span>
<span>}</span></code></pre></div><div><div><p><a href="https://velog.io/@psj0810/posts"><img src="https://velog.velcdn.com/images/psj0810/profile/e4fda81b-b77d-40b2-882f-457434282586/%EC%82%AC%EC%A7%841.jpg" alt="profile"></a></p><div><div><p><a href="https://velog.io/@psj0810/posts">Psj</a></p></div><p>Software Developer</p></div></div></div><div><div><a href="/@psj0810/문자열안에-문자열String-내장-메서드-contains사용-indexOf"><div><div><p>이전</p><p> 포스트</p></div><h3>문자열안에 문자열(String 내장 메서드 contains()사용, indexOf())</h3></div></a></div><div><a href="/@psj0810/문자-반복-출력하기기본자바문법-정석활용-문자열-char배열-다시-문자열로-변경join-StringBuilderrepeat"><div><div><p>다음</p><p> 포스트</p></div><h3>문자 반복 출력하기(기본자바문법 정석활용!!!,  문자열-&gt;char배열-&gt;  다시 문자열로 변경)(join(), StringBuilder,repeat())</h3></div></a></div></div><div><h4>0개의 댓글</h4><div></div></div><div><h4>관련 채용 정보</h4></div></div></div>

psj.log

내풀이
class Solution {
    public int solution(String message) {
        int answer = 0;
        int count = 1;
        char[] arr = message.toCharArray();
        while(count<arr.length){
            count++;
        }
        answer = count*2;
        return answer;
    }
}
다른사람풀이
class Solution {
    public int solution(String message) {
        return message.length()*2;
    }
}

편지( String의 length() 사용)

댓글