LeetCode 2639. Find the Width of Columns of a Grid
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], [3], [12]]
, the width of the only column is3
since-10
is of length3
.
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 = [[1],[22],[333]]
Output: [3]
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
其实用字符串自带的length函数最快了,所以我是转成字符串,求出来对应的值,然后返回的
Runtime: 6 ms, faster than 100.00% of Java online submissions for Find the Width of Columns of a Grid.
Memory Usage: 44.1 MB, less than 100.00% of Java online submissions for Find the Width of Columns of a Grid.