14. 最长公共前缀

题目：https://leetcode-cn.com/problems/longest-common-prefix/description/

package com.test;public class Lesson014 {    public static void main(String[] args) {        String[] strs = new String[]{};        String prefix = longestCommonPrefix(strs);        System.out.println(prefix);    }    private static String longestCommonPrefix(String[] strs) {        if (strs.length == 0) {            return "";        }        // 默认公共前缀是第一个字符串        String res = strs[0];        for (int i = 1; i < strs.length; i++) {            // 获取每个字符串            String current = strs[i];            int j = 0;            // 获取循环的最大数值            int length = Math.min(res.length(), current.length());            for (; j < length; j++) {                String res01 = res.substring(j, j + 1);                String current01 = current.substring(j, j + 1);                if (!res01.equals(current01)) {                    break;                }            }            // 每一次循环修正公共前缀            res = res.substring(0, j);        }        return res;    }}