方阵的坐标是

(1,1)(1,2)...(1,n)
(2,1)(2,2)...(2,n)
..................
(n,1)(n,2)...(n,n)

还是

(0,0)(0,1)...(0,n-1)
(1,0)(1,1)...(1,n-1)
....................
(n-1,0)(n-1,1)...(n-1,n-1)

？