20201209

20201209/main.go

@@ -0,0 +1,25 @@
+package main
+
+func main() {
+
+}
+
+func transform(src [][]int) [][]int {
+	for i := 0; i < len(src); i++ {
+		for j := i; j < len(src); j++ {
+			src[i][j], src[j][i] = src[j][i], src[i][j]
+		}
+	}
+	for i, l := range src {
+		src[i] = reverse(l)
+	}
+	return src
+}
+
+func reverse(src []int) []int {
+	l := len(src)
+	for i := 0; i < l/2; i++ {
+		src[i], src[l-i-1] = src[l-i-1], src[i]
+	}
+	return src
+}