Swap Rows and Columns

Easy

You are given a rectangular table of integers grid with m rows and n columns. Build a new table with n rows and m columns where row i is column i of the original, read from top to bottom. Put differently, the value grid[r][c] must end up at position [c][r] of the answer. Return the new table as a list of rows.

Example 1

grid=[[4, 0, -2], [7, 1, 9]] → [[4, 7], [0, 1], [-2, 9]]

The first column [4, 7] becomes the first row, the second [0, 1] the second, and the third [-2, 9] the third. A 2×3 table turns into a 3×2 one.

Example 2

grid=[[5], [6], [8]] → [[5, 6, 8]]

A single column turns into a single row.

Constraints

1 ≤ m, n ≤ 1000
1 ≤ m · n ≤ 10⁵
All rows have the same length
-10⁹ ≤ grid[r][c] ≤ 10⁹

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Topics

Array Matrix Simulation

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Input

grid=[[4, 0, -2], [7, 1, 9]]

Expected

[[4, 7], [0, 1], [-2, 9]]

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