James Pan

原题网址：https://leetcode.com/problems/bitwise-and-of-numbers-range/ Given a range [m, n] where 0 For example, given the range [5, 7], you should return 4. 思路：总体思路就是求出m和n的高位比特的公共前缀。 方法一：变动前缀本身。

原题网址：https://leetcode.com/problems/longest-common-prefix/ Write a function to find the longest common prefix string amongst an array of strings. 方法一：暴力求解。 public class Solution { public Strin