refactor 37

Author: fishercoder1534

src/main/java/com/fishercoder/solutions/_37.java

@@ -1,56 +1,5 @@
 package com.fishercoder.solutions;
 
-/**
- * 37. Sudoku Solver
- *
- * Determine if a 9x9 Sudoku board is valid. Only the filled cells need to be validated according to the following rules:
- *
- * Each row must contain the digits 1-9 without repetition.
- * Each column must contain the digits 1-9 without repetition.
- * Each of the 9 3x3 sub-boxes of the grid must contain the digits 1-9 without repetition.
- *
- * The Sudoku board could be partially filled, where empty cells are filled with the character '.'.
- *
- * Example 1:
- *
- * Input:
- * [
- *   ["5","3",".",".","7",".",".",".","."],
- *   ["6",".",".","1","9","5",".",".","."],
- *   [".","9","8",".",".",".",".","6","."],
- *   ["8",".",".",".","6",".",".",".","3"],
- *   ["4",".",".","8",".","3",".",".","1"],
- *   ["7",".",".",".","2",".",".",".","6"],
- *   [".","6",".",".",".",".","2","8","."],
- *   [".",".",".","4","1","9",".",".","5"],
- *   [".",".",".",".","8",".",".","7","9"]
- * ]
- * Output: true
- * Example 2:
- *
- * Input:
- * [
- *   ["8","3",".",".","7",".",".",".","."],
- *   ["6",".",".","1","9","5",".",".","."],
- *   [".","9","8",".",".",".",".","6","."],
- *   ["8",".",".",".","6",".",".",".","3"],
- *   ["4",".",".","8",".","3",".",".","1"],
- *   ["7",".",".",".","2",".",".",".","6"],
- *   [".","6",".",".",".",".","2","8","."],
- *   [".",".",".","4","1","9",".",".","5"],
- *   [".",".",".",".","8",".",".","7","9"]
- * ]
- * Output: false
- * Explanation: Same as Example 1, except with the 5 in the top left corner being
- *     modified to 8. Since there are two 8's in the top left 3x3 sub-box, it is invalid.
- * Note:
- *
- * A Sudoku board (partially filled) could be valid but is not necessarily solvable.
- * Only the filled cells need to be validated according to the mentioned rules.
- * The given board contain only digits 1-9 and the character '.'.
- * The given board size is always 9x9.
- *
- */
 public class _37 {
 
     public static class Solution1 {