317 个 HackerRank 问题的有效解决方案
* [10 天统计学](#10-天统计学)
* [30 天代码](#30-天代码)
* [算法](#算法)
* [破解编程面试](#破解编程面试)
* [数据结构](#数据结构)
* [通用编程](#通用编程)
* [实现](#实现)
* [Java](#java)
* [SQL](#sql)
解决方案使用 Java 8 编写
SQL 解决方案使用 MySQL 编写
# 10 天统计学
| 天数 | 挑战 | 分数 | 解决方案 |
|:---:|:--------------------------------------------------------------------------------------------------------------------------:|:------:|:-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------:|
| 0 | [均值、中位数和众数](https://www.hackerrank.com/challenges/s10-basic-statistics) | 30 | [Solution.java](https://github.com/RodneyShag/HackerRank_solutions/blob/master/10%20Days%20of%20Statistics/Day%200%20-%20Mean%2C%20Median%2C%20and%20Mode/Solution.java) |
| 0 | [加权均值](https://www.hackerrank.com/challenges/s10-weighted-mean) | 30 | [Solution.java](https://github.com/RodneyShag/HackerRank_solutions/blob/master/10%20Days%20of%20Statistics/Day%200%20-%20Weighted%20Mean/Solution.java) |
| 1 | [四分位数](https://www.hackerrank.com/challenges/s10-quartiles) | 30 | [Solution.java](https://github.com/RodneyShag/HackerRank_solutions/blob/master/10%20Days%20of%20Statistics/Day%201%20-%20Quartiles/Solution.java) |