programmers_JadenCase 문자열 만들기_java

https://school.programmers.co.kr/learn/courses/30/lessons/12951#

프로그래머스

import java.util.*;
import java.util.regex.Pattern;

class Solution {
    public String solution(String s) {
        String answer = "";
        
        StringBuilder sb = new StringBuilder();
        s = s.toLowerCase();
        char[] sArr = s.toCharArray();
        int size = sArr.length;
        
       
        for(int i = 0; i< size;){
            if(sArr[i] == ' '){
                while(i < size && sArr[i] == ' '){
                    sb.append(' ');
                    i++;
                }
            }       
            
            if(i < size && sArr[i] >= 'a' && sArr[i] <= 'z' ){
                sb.append((char)(sArr[i] - 32));
                i++;
            }   
            while(i < size && sArr[i] != ' '){
                sb.append(sArr[i]);
                i++;
            }
        }
        answer = sb.toString();
        return answer;
    }
}