LeetCode 2639: Find the Width of Columns of a Grid Solution
Master LeetCode problem 2639 (Find the Width of Columns of a Grid), a easy challenge, with our optimized solutions in Java, C++, and Python. Explore detailed explanations, test your code in our interactive editor, and prepare for coding interviews.
Problem Explanation
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:
- Initialize an array
ansof sizento store the width of each column. - Iterate through each column of the grid and find the maximum length of integers in that column.
- Update the
ansarray with the maximum width found for each column. - Return the
ansarray as the result.
- Initialize an array
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Time Complexity: O(m*n), where m is the number of rows and n is the number of columns in the grid.
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Space Complexity: O(n), where n is the number of columns in the grid.
Solution Code
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;
}
}Try It Yourself
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