From 6339943b700c47e5c860c36f5ccdf2d37a1373be Mon Sep 17 00:00:00 2001
From: wolves <yangwolves@foxmail.com>
Date: Sun, 12 Apr 2026 16:23:39 +0800
Subject: [PATCH] routine

---
 26/04/1886.go | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)
 create mode 100644 26/04/1886.go

diff --git a/26/04/1886.go b/26/04/1886.go
new file mode 100644
index 0000000..ab3ef9f
--- /dev/null
+++ b/26/04/1886.go
@@ -0,0 +1,33 @@
+package leetcode
+
+// 旋转90度通用方法就是 先水平旋转，然后转置
+func findRotation(mat [][]int, target [][]int) bool {
+	n := len(mat)
+	// 最多旋转 4 次
+	for k := 0; k < 4; k++ {
+		// 旋转操作
+		for i := 0; i < n/2; i++ {
+			for j := 0; j < (n+1)/2; j++ {
+				mat[i][j], mat[n-1-j][i], mat[n-1-i][n-1-j], mat[j][n-1-i] =
+					mat[n-1-j][i], mat[n-1-i][n-1-j], mat[j][n-1-i], mat[i][j]
+			}
+		}
+
+		if isEqual(mat, target) {
+			return true
+		}
+	}
+	return false
+}
+
+func isEqual(mat, target [][]int) bool {
+	n := len(mat)
+	for i := 0; i < n; i++ {
+		for j := 0; j < n; j++ {
+			if mat[i][j] != target[i][j] {
+				return false
+			}
+		}
+	}
+	return true
+}