给下面代码加上注释import numpy as np import pickle def solve_tag(answer,sentence): result = [] hidden_state = ["B", "M", "E", "S"] for i in range(len(answer)): if(hidden_state[int(answer[i])]=='E' or hidden_state[int(answer[i])]=='S'): result.append(sentence[i]) result.append(" ") else: result.append(sentence[i]) return result

# 导入 numpy 和 pickle 库
import numpy as np
import pickle

def solve_tag(answer,sentence):
# 定义隐藏状态列表
hidden_state = ["B", "M", "E", "S"]
# 初始化结果列表
result = []
# 循环遍历答案列表
for i in range(len(answer)):
# 判断当前标记是否为"E"或"S"
if(hidden_state[int(answer[i])]=='E' or hidden_state[int(answer[i])]=='S'):
# 将当前字符添加到结果列表中
result.append(sentence[i])
# 添加空格
result.append(" ")
else:
# 将当前字符添加到结果列表中
result.append(sentence[i])
# 返回结果列表
return result