Add solution #2639

Author: JoshCrozier

README.md

@@ -1960,6 +1960,7 @@
 2634|[Filter Elements from Array](./solutions/2634-filter-elements-from-array.js)|Easy|
 2635|[Apply Transform Over Each Element in Array](./solutions/2635-apply-transform-over-each-element-in-array.js)|Easy|
 2637|[Promise Time Limit](./solutions/2637-promise-time-limit.js)|Medium|
+2639|[Find the Width of Columns of a Grid](./solutions/2639-find-the-width-of-columns-of-a-grid.js)|Easy|
 2648|[Generate Fibonacci Sequence](./solutions/2648-generate-fibonacci-sequence.js)|Easy|
 2649|[Nested Array Generator](./solutions/2649-nested-array-generator.js)|Medium|
 2650|[Design Cancellable Function](./solutions/2650-design-cancellable-function.js)|Hard|

solutions/2639-find-the-width-of-columns-of-a-grid.js

@@ -0,0 +1,34 @@
+/**
+ * 2639. Find the Width of Columns of a Grid
+ * https://leetcode.com/problems/find-the-width-of-columns-of-a-grid/
+ * Difficulty: Easy
+ *
+ * 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 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.
+ */
+
+/**
+ * @param {number[][]} grid
+ * @return {number[]}
+ */
+var findColumnWidth = function(grid) {
+  const rows = grid.length;
+  const cols = grid[0].length;
+  const result = new Array(cols).fill(0);
+
+  for (let col = 0; col < cols; col++) {
+    for (let row = 0; row < rows; row++) {
+      const num = grid[row][col];
+      result[col] = Math.max(result[col], String(num).length);
+    }
+  }
+
+  return result;
+};