求解N皇后问题：把N个皇后放在一个棋盘上，每行和每列只能有一个皇后。另外，一个皇后只能在任一行、列或对角线上。要求皇后数≥100。用了两种方法，回溯法和启发式修补法。-Solve N Queen' s problem: N queens on a chessboard, each row and each column can have only one Queen. Further, only in a queen in any row, column, or diagonal. Queen number ≥ 100. Using two methods, backtracking and heuristic repair method.