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TA贡献1963条经验 获得超6个赞
你只需要从起始行开始计算左大括号,当遇到左大括号时,增加它,当遇到右大括号时,减少它。当它再次达到零时,您会找到正确的索引。
示例代码:
def get_closing_brace_index(str_list, left_idx):
# input check, you can ignore it if you assure valid input
if left_idx < 0 or left_idx >= len(str_list) or '(' not in str_list[left_idx]:
return -1, ''
# use a left brace counter
left_count = 0
# just ignore everything before open_brace_index
for i, s in enumerate(str_list[left_idx:]):
for c in s:
if c == '(':
left_count += 1
elif c == ')':
left_count -= 1
# find matched closing brace
if left_count == 0:
return i + left_idx, str_list[i + left_idx]
# invalid brace match
elif left_count < 0:
return -1, ''
return -1, ''
def test():
mylist = [
'a',
'b(',
'(',
'cd',
'd(e)',
'hi)',
'last brace) '
]
print(get_closing_brace_index(mylist, 1))
# output (6, 'last brace) ')
print(get_closing_brace_index(mylist, 2))
# output (5, 'hi)')
print(get_closing_brace_index(mylist, 4))
# output (4, 'd(e)')
print(get_closing_brace_index(mylist, 0))
# output (-1, '')
print(get_closing_brace_index(mylist, 6))
# output (-1, '')
希望能帮到你。
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