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输入一个自然数N(2≤N≤9),要求输出如下的螺旋矩阵,即边长为N*N,元素取值为1至N*N,1在左上角,呈顺时针方向依次放置各元素。
N=3时,相应的矩阵中每个数字位置如下图所示:
1 2 3
8 9 4
7 6 5-Enter a natural number N (2 ≤ N ≤ 9), the requirements are as follows spiral output matrix, that is, edge length of N* N, the element values for the 1 to N* N, 1 in the upper left corner, showing a clockwise direction in order to place the various elements . N = 3, the corresponding figures for the location of each matrix as follows: 123,894,765