5. Longest Palindromic Substring
Given a string s, return the longest palindromicsubstring in s.
Example 1: Input: s “babad” Output: “bab” Explanation: “aba” is also a valid answer. Example 2: Input: s “cbbd” Output: “bb” Constraints:
1 &l…
默认参数 注: 在Python中,print(x, and y both correct)是一条打印语句(print statement),用于将一条消息输出到控制台或终端。它的作用是将变量x的值和字符串and y both correct同时输出到屏幕上。
在这个语句中&…