 # Transpose a Matrix

Easy
8
56.8% Acceptance

In this lab, you will implement a function to transpose a given 2D integer array `matrix`. The transpose of a matrix is the matrix flipped over its main diagonal, switching the matrix's row and column indices.

Example 1:

Input: matrix = [[1, 2, 3], [4, 5, 6], [7, 8, 9]]
Output: [[1, 4, 7], [2, 5, 8], [3, 6, 9]]

Example 2:

Input: matrix = [[1, 2, 3], [4, 5, 6]]
Output: [[1, 4], [2, 5], [3, 6]]

Example 3:

Input: matrix = [[1, 4, 7], [2, 5, 8], [3, 6, 9]]
Output: [[1, 2, 3], [4, 5, 6], [7, 8, 9]]

Constraints:

• `m == matrix.length`
• `n == matrix[i].length`
• `1 <= m, n <= 1000`
• `1 <= m * n <= 105`
• `-109 <= matrix[i][j] <= 109`

In this lab, you will export a function `transpose(matrix: number[][]): number[][]`. We have already initialized a file `index.js` for you. In the following sections, you'll find different challenges.

## Challenges

1. Write the `transpose` function that takes a 2D integer array `matrix` and returns the transpose of the input matrix.
2. Export the `transpose` function using ESM export.