# -*- coding: utf8 -*-# 符號(hào)表SYMBOLS = {'}': '{', ']': '[', ')': '(', '>': '<'}SYMBOLS_L, SYMBOLS_R = SYMBOLS.values(), SYMBOLS.keys()def check(s): arr = [] for c in s:  if c in SYMBOLS_L:   # 左符號(hào)入棧   arr.append(c)  elif c in SYMBOLS_R:   # 右符號(hào)要么出棧，要么匹配失敗   if arr and arr[-1] == SYMBOLS[c]:    arr.pop()   else:    return False return Trueprint(check("3 * {3 +[(2 -3) * (4+5)]}"))print(check("3 * {3+ [4 - 6}]"))

# -*- coding: utf8 -*-# 存儲(chǔ)左括號(hào)和右括號(hào)open_brackets = '([{<'close_brackets = ')]}>'# 映射左右括號(hào)便于出棧判斷brackets_map = {')': '(', ']': '[', '}': '{', '>': '<'}# 對(duì)于每一行數(shù)據(jù)，進(jìn)行如下判定若括號(hào)為左括號(hào)，加入棧，若括號(hào)為右括號(hào)，判斷是否跟棧尾括號(hào)對(duì)應(yīng)，# 若對(duì)應(yīng)，彈出棧尾元素，若所有括號(hào)均正確閉合，則最后棧為空。rows = ['([<^>x[ ]{a}]{/}{t}g<^>)<{x}b>{x}<z({%}w >[b][c[c]]{<h>{h}}', '[/]{((x)({{*}*}w)w){f}{v}[%(^[z]{u}{ })([[ ]-]h)]{c}(*)[y]}', '<<(^)z>>[b]< >[[(c)u[v]{z<b< >><b>}]g][/b[(])v(v)(+)](v)', '[[b]][(v)g]<z>([{{<->+}e}[*]d<+>]g[[a] <+>(v){b}<e>]){a}[u]']for row in rows: stack = [] label = True for char in row:  if char in open_brackets:   stack.append(char)  elif char in close_brackets:   if len(stack) < 1:    label = False    break   elif brackets_map[char] == stack[-1]:    stack.pop()   else:    label = False    break  else:   continue if stack != []:  label = False print(label)

#!usr/bin/env python# encoding:utf-8def bracket_mathch(one_str): ''''' 括號(hào)匹配 ''' tmp_list = [] open_bracket_list = ['(', '[', '{', '<', '《'] close_bracket_list = [')', ']', '}', '>', '》'] one_str_list = list(one_str) length = len(one_str_list) set_list = list(set(one_str_list)) num_list = [one_str_list.count(one) for one in set_list] if one_str[0] in close_bracket_list:  return False elif length % 2 != 0:  return False elif len(set_list) % 2 != 0:  return False else:  for i in range(length):   if one_str[i] in open_bracket_list:    tmp_list.append(one_str[i])   elif one_str[i] in close_bracket_list:    if close_bracket_list.index(one_str[i]) == open_bracket_list.index(tmp_list[-1]):     tmp_list.pop()    else:     return False     break return Trueif __name__ == '__main__': one_str_list = ['({})', '({[<《》>]})', '[(]){}', '{{{{{{', '([{}])', '}{[()]'] for one_str in one_str_list:  if bracket_mathch(one_str):   print(one_str, '正確')  else:   print(one_str, '錯(cuò)誤') tmp = '{}[{()()[]<{{[[[[(())()()(){}[]{}[]()<>]]]]}}>}]' print(bracket_mathch(tmp))