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题目：（中等）

标签：字符串

解法一：

class Solution:    def removeComments(self, source: List[str]) -> List[str]:        removing = False  # 是否在被多行屏蔽的情况下        ans = []        idx = 0        in_line = False        while idx < len(source):            line = source[idx]  # 读取当前行信息            if removing:                if "*/" in line:                    removing = False                    source[idx] = line[line.index("*/") + 2:]                else:                    idx += 1            else:                N = len(line)                idx_1 = line.index("//") if "//" in line else N                idx_2 = line.index("/*") if "/*" in line else N                if idx_1 < idx_2 and "//" in line:                    if in_line and ans:                        content = ans.pop() + line[:line.index("//")]                        in_line = False                    else:                        content = line[:line.index("//")]                    if content:                        ans.append(content)                    idx += 1                elif idx_1 > idx_2:                    if in_line and ans:                        ans.append(ans.pop() + line[:line.index("/*")])                    else:                        ans.append(line[:line.index("/*")])                    source[idx] = line[line.index("/*") + 2:]                    removing = True                    in_line = True                else:                    if in_line and ans:                        content = ans.pop() + line                        in_line = False                    else:                        content = line                    if content:                        ans.append(content)                    idx += 1        return ans

解法二（整理解法一代码）：

class Solution:    def removeComments(self, source: List[str]) -> List[str]:        is_block = False  # 是否在被多行屏蔽的情况下        in_line = False  # 当前是否换行        ans = []        idx = 0        while idx < len(source):            line = source[idx]  # 读取当前行信息            if is_block:  # 处理当前正在多行屏蔽的情况下                if "*/" in line:                    is_block = False                    source[idx] = line[line.index("*/") + 2:]                else:                    idx += 1            else:                content = ans.pop() if in_line and ans else ""  # 当前行结果                idx_1 = line.index("//") if "//" in line else float("inf")                idx_2 = line.index("/*") if "/*" in line else float("inf")                if idx_1 < idx_2:                    in_line = False                    content += line[:line.index("//")]                    if content:                        ans.append(content)                    idx += 1                elif idx_1 > idx_2:                    is_block, in_line = True, True                    ans.append(content + line[:line.index("/*")])                    source[idx] = line[line.index("/*") + 2:]                else:                    in_line = False                    content += line                    if content:                        ans.append(content)                    idx += 1        return ans

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