프로그래머스 - A 강조하기(JAVA)

 

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class Solution {
    public String solution(String myString) {
    
        StringBuilder sb = new StringBuilder();
        String LowermyString = myString.toLowerCase();
        
        for(int i = 0; i < myString.length(); i++){
            if(LowermyString.charAt(i) == 'a'){
                sb.append("A");
            }else{
                sb.append(LowermyString.charAt(i));
            }
        }
        
        return sb.toString();
    }
}