文档包括生成随机数组的方法、简单排序算法的实现以及闰年个数的计算方法，适合初学者掌握简单排序算法的原理，为更进一步学习数据结构打下良好的基础。-Document includes an array of methods to generate a random, simple sorting algorithm and method of calculating the number of leap years, suitable for beginners to master the principles of simple sorting algorithm, the data structure for the further study and lay a good foundation.