やってみた。 https://qiita.com/javacommons/items/9cdd4fdbf6e74c7f106b def check_brackets1(s): dc = dict(zip('{}()[]','}{)(][')) lst = [] for c in s: if lst and c == dc[lst[-1]]: del lst[-1] else: lst.append(c) return not lst def check_brac…