DevExCode

2639. Find the Width of Columns of a Grid

ArrayMatrix

Explanation

To solve this problem, we need to iterate through each element in the grid and determine the width of each column by finding the maximum length of integers in each column. We can achieve this by iterating through each column and finding the maximum length of integers in that column.

  • Algorithm:

    1. Initialize an array ans of size n to store the width of each column.
    2. Iterate through each column of the grid and find the maximum length of integers in that column.
    3. Update the ans array with the maximum width found for each column.
    4. Return the ans array as the result.

  • Time Complexity: O(m*n), where m is the number of rows and n is the number of columns in the grid.

  • Space Complexity: O(n), where n is the number of columns in the grid.

View Leetcode Problem
class Solution {
    public int[] findWidthOfColumns(int[][] grid) {
        int m = grid.length;
        int n = grid[0].length;
        
        int[] ans = new int[n];
        
        for (int j = 0; j < n; j++) {
            for (int i = 0; i < m; i++) {
                int len = String.valueOf(grid[i][j]).length();
                ans[j] = Math.max(ans[j], len);
            }
        }
        
        return ans;
    }
}

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