algorithm achieve by javascript
changelog:
- bubble sort ----- 2016/10/24
- heap sort ----- 2018/01/29
- insert sort ----- 2018/01/29
- merge sort ----- 2018/01/29
- quick sort ----- 2018/01/29
- radix sort ----- 2018/01/29
- selection sort ----- 2018/01/29
- shell sort ----- 2018/01/29