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43 lines
602 B
43 lines
602 B
package cap3
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// Ex20 趣味矩阵
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func Ex20(n int) [][]int {
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matrix := make([][]int, n)
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for i := 0; i < len(matrix); i++ {
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matrix[i] = make([]int, n)
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}
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for i := range n {
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for j := range n {
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// 对角线
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if i == j || i+j == n-1 {
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matrix[i][j] = 0
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continue
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}
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// 左上部分
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if i+j < n-1 {
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if i < j {
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// 上
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matrix[i][j] = 1
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} else {
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// 左
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matrix[i][j] = 2
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}
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}
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// 右下边部分
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if i+j > n-1 {
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if i > j {
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// 下
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matrix[i][j] = 3
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} else {
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// 右
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matrix[i][j] = 4
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}
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}
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}
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}
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return matrix
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}
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