백준 5397 키로거 / Python

https://www.acmicpc.net/problem/5397

5397번: 키로거

 

 

 

코드

t = int(input())
for _ in range(t):
    s = list(input())
    left, right = [], []
    for i in s:
        if i == '<':
            if left:
                right.append(left.pop())
        elif i == '>':
            if right:
                left.append(right.pop())
        elif i == '-':
            if left:
                left.pop()
        else:
            left.append(i)
    left.extend(reversed(right))
    print(''.join(left))