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Merge pull request #133 from NovaHe/fix/48

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fix/48: clean up code
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halfrost
2021-05-22 21:31:25 +08:00
committed by GitHub
parent 4330393c9b bb50f33fec
commit 991cb6e3d7
2 changed files with 14 additions and 35 deletions
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23
leetcode/0048.Rotate-Image/48. Rotate Image.go
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@ -1,26 +1,17 @@
package leetcode
func rotate(matrix [][]int) {
row := len(matrix)
if row <= 0 {
return
}
column := len(matrix[0])
length := len(matrix)
// rotate by diagonal 对角线变换
for i := 0; i < row; i++ {
for j := i + 1; j < column; j++ {
tmp := matrix[i][j]
matrix[i][j] = matrix[j][i]
matrix[j][i] = tmp
for i := 0; i < length; i++ {
for j := i + 1; j < length; j++ {
matrix[i][j], matrix[j][i] = matrix[j][i], matrix[i][j]
}
}
// rotate by vertical centerline 竖直轴对称翻转
halfColumn := column / 2
for i := 0; i < row; i++ {
for j := 0; j < halfColumn; j++ {
tmp := matrix[i][j]
matrix[i][j] = matrix[i][column-j-1]
matrix[i][column-j-1] = tmp
for i := 0; i < length; i++ {
for j := 0; j < length/2; j++ {
matrix[i][j], matrix[i][length-j-1] = matrix[i][length-j-1], matrix[i][j]
}
}
}