会飞的唐老鸭

Two Sum 需求说明 Given an array of integers, find two numbers such that they add up to a specific target number. The function twoSum should return indices of the two numbers such that they ad

需求说明 Given an input string, reverse the string word by word. For example, Given s = "the sky is blue", return "blue is sky the". 大致题意 输入一个字符串并翻转这个字符串. 举例 给定一个字符串"the sky is blue" 返回字符串"bl