some basic method with comments of my own version .Plus, Its Chinese comments version. oh damn, if it's Chinese version ,why i worte these? 基础算法包括排序和面试常见问题等的Java版,问题来自于面试和笔试以及<剑指offer>,有我自己的中文注释.注释会比较啰嗦,为了防止时间太长忘掉思路(然而还是会看不懂注释233).