# ★☆☆☆☆ 짝지어 제거하기
# 구현코드
import java.util.Stack;
public class Solution {
public int solution(String s) {
Stack<Integer> stack = new Stack<>();
for (int i = 0; i < s.length(); i++) {
if(stack.isEmpty()){
stack.add(s.charAt(i)-'0');
continue;
}
int front = stack.pop();
int back = s.charAt(i) -'0';
if(front == back)
continue;
stack.add(front);
stack.add(back);
}
if (stack.isEmpty())
return 1;
return 0;
}
}
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