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Transpose Matrix
Difficulty: Easy
Category: DSA
Topics: Array
Asked at: Apple, Microsoft, Nvidia, Citadel
Given a 2D integer array `matrix`, return the transpose of `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]]
Constraints:
`m == matrix.length`
`n == matrix[i].length`
`1 <= m, n <= 1000`
`1 <= m * n <= 105`
`-109 <= matrix[i][j] <= 109`
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