2639. Find the Width of Columns of a Grid
Easy
106
15

You are given a 0-indexed `m x n` integer matrix `grid`. The width of a column is the maximum length of its integers.

• For example, if `grid = [[-10], , ]`, the width of the only column is `3` since `-10` is of length `3`.

Return an integer array `ans` of size `n` where `ans[i]` is the width of the `ith` column.

The length of an integer `x` with `len` digits is equal to `len` if `x` is non-negative, and `len + 1` otherwise.

Example 1:

```Input: grid = [,,]
Output: 
Explanation: In the 0th column, 333 is of length 3.
```

Example 2:

```Input: grid = [[-15,1,3],[15,7,12],[5,6,-2]]
Output: [3,1,2]
Explanation:
In the 0th column, only -15 is of length 3.
In the 1st column, all integers are of length 1.
In the 2nd column, both 12 and -2 are of length 2.
```

Constraints:

• `m == grid.length`
• `n == grid[i].length`
• `1 <= m, n <= 100 `
• `-109 <= grid[r][c] <= 109`
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