#coding=utf-8 class Solution: def judge(self, threshold, i, j): # sum(map(int, str(i) + str(j)))这一句简直精髓! 直接得到坐标位置的 位和! i,j是超过1位的数也可以完美解决! if sum(map(int, str(i) + str(j))) <= threshold: return True else: return False def findgrid(self, threshold, rows, cols, matrix, i, j): count = 0 if i<rows and j<cols and i>=0 and j>=0 and self.judge(threshold, i, j) and matrix[i][j] == 0: # matrix[i][j]==0表示没走过这一格 matrix[i][j] = 1 # 表示已经走过了 count = 1 + self.findgrid(threshold, rows, cols, matrix, i, j+1) \ + self.findgrid(threshold, rows, cols, matrix, i, j-1) \ + self.findgrid(threshold, rows, cols, matrix, i+1, j) \ + self.findgrid(threshold, rows, cols, matrix, i-1, j) return count def movingCount(self, threshold, rows, cols): matrix = [[0 for i in range(cols)] for j in range(rows)] count = self.findgrid(threshold, rows, cols, matrix, 0, 0) print(matrix) return count # test s = Solution() count = s.movingCount(9, 12, 12) print count