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拉丁方
- 构造 NXN 阶的拉丁方阵(2<=N<=9),使方阵中的每一行和每 一列中数字1到N只出现一次。如N=4时: 1 2 3 4 2 3 4 1 3 4 1 2 4 1 2 3-tectonic NxN bands Latin matrix (2lt; = Nlt; = 9), phalanx of each line and each series of numbers from 1 to N has only appeared once. If N