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website/content/ChapterFour/0867.Transpose-Matrix.md

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+# [867. Transpose Matrix](https://leetcode.com/problems/transpose-matrix/)
+
+
+## 题目
+
+Given a matrix `A`, return the transpose of `A`.
+
+The transpose of a matrix is the matrix flipped over it's main diagonal, switching the row and column indices of the matrix.
+
+**Example 1**:
+
+    Input: [[1,2,3],[4,5,6],[7,8,9]]
+    Output: [[1,4,7],[2,5,8],[3,6,9]]
+
+**Example 2**:
+
+    Input: [[1,2,3],[4,5,6]]
+    Output: [[1,4],[2,5],[3,6]]
+
+**Note**:
+
+1. `1 <= A.length <= 1000`
+2. `1 <= A[0].length <= 1000`
+
+
+## 题目大意
+
+给定一个矩阵 A， 返回 A 的转置矩阵。矩阵的转置是指将矩阵的主对角线翻转，交换矩阵的行索引与列索引。
+
+
+## 解题思路
+
+
+- 给出一个矩阵，顺时针旋转 90°
+- 解题思路很简单，直接模拟即可。
+
+
+## 代码
+
+```go
+
+package leetcode
+
+func transpose(A [][]int) [][]int {
+	row, col, result := len(A), len(A[0]), make([][]int, len(A[0]))
+	for i := range result {
+		result[i] = make([]int, row)
+	}
+	for i := 0; i < row; i++ {
+		for j := 0; j < col; j++ {
+			result[j][i] = A[i][j]
+		}
+	}
+	return result
+}
+
+```