algorithm

coding, algorithm, leetcode, good place for everyone

---

     *        *
     *        *
     *        *
     *        *
     *        *
     ******************
                      *

---

                      *
                  *   *
                   *  *
                    * *
                      *

---

     *        *
     *        *
     *        *
     *        *
     *        *
     ******************
                      *

---

                      *
                  *   *
                   *  *
                    * *
                      *