
quiz๋ฐฐ์ด์ ๋ฐ๋ณตํ๋ฉด์, ๊ฐ ์ธ๋ฑ์ค๋น ๊ณต๋ฐฑ(" ")์ ๊ธฐ์ค์ผ๋ก splitํ๋ฉด
์ , ์ฐ์ฐ์, ์, =, ์ ๋ก ๋๋๋๊น
1) ์ฐ์ฐ์๊ฐ +์ธ ๊ฒฝ์ฐ
2) ์ฐ์ฐ์๊ฐ -์ธ ๊ฒฝ์ฐ๋ก ๋๋์ด์, index๊ณ์ฐ์ ํ๋ฉด ๋๋ค.
class Solution {
public String[] solution(String[] quiz) {
String[] answer = new String[quiz.length];
for(int i=0; i<quiz.length; i++){
String[] arr=quiz[i].split(" ");
if(arr[1].equals("+")){
if(Integer.parseInt(arr[0])+Integer.parseInt(arr[2])==Integer.parseInt(arr[4])) answer[i]="O";
else answer[i]="X";
}else{
if(Integer.parseInt(arr[0])-Integer.parseInt(arr[2])==Integer.parseInt(arr[4])) answer[i]="O";
else
answer[i]="X";
}
}
return answer;
}
}

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