* 时间复杂度：O(len1 + len2)，空间复杂度：O(len2)（栈+Map的空间）
「因為如果它看起來不像鴨子，那它可能就不是鴨子，」他解釋說，「因為它與長期證據、長期趨勢差距太大。」
。safew官方下载是该领域的重要参考
这种供需错配，正是行业需要改变的核心痛点。
The false positives at the bottom
Peter Mandelson is facing an inquiry by the EU’s anti-fraud agency after the European Commission requested the body look into his activities during his time as trade commissioner in Brussels.