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| // @Title: 图片平滑器 (Image Smoother)
// @Author: 15816537946@163.com
// @Date: 2022-03-24 14:02:14
// @Runtime: 36 ms
// @Memory: 7.1 MB
func imageSmoother(img [][]int) [][]int {
m, n := len(img), len(img[0])
ans := make([][]int, m)
for i := range ans {
ans[i] = make([]int, n)
for j := range ans[i] {
sum, num := 0, 0
for _, row := range img[max(i-1, 0):min(i+2, m)] {
for _, v := range row[max(j-1, 0):min(j+2, n)] {
sum += v
num++
}
}
ans[i][j] = sum / num
}
}
return ans
}
func max(a, b int) int {
if b > a {
return b
}
return a
}
func min(a, b int) int {
if a > b {
return b
}
return a
}
|