Reverse Key Indexes反向索引A reverse key index is a type of B-tree index that physically reverses the bytes of each index keywhile keeping the column order.反向索引就是将正常的键值头尾调换后再进行...
[抄题]:
Given an input string, reverse the string word by word.
Example:
Input: "the sky is blue",
Output: "blue is sky the".
[暴力解法]:
时间分析:
空间分析:
[优化后]:
时间分析:
空间分...
Given a string and an integer k, you need to reverse the first k characters for every 2k characters counting from the start of the string. If there are less than k characters left, reverse all of t...