Add solution #2482

Author: JoshCrozier

README.md

@@ -306,6 +306,7 @@
 2244|[Minimum Rounds to Complete All Tasks](./2244-minimum-rounds-to-complete-all-tasks.js)|Medium|
 2427|[Number of Common Factors](./2427-number-of-common-factors.js)|Easy|
 2469|[Convert the Temperature](./2469-convert-the-temperature.js)|Easy|
+2482|[Difference Between Ones and Zeros in Row and Column](./2482-difference-between-ones-and-zeros-in-row-and-column.js)|Medium|
 
 ## License
 

solutions/2482-difference-between-ones-and-zeros-in-row-and-column.js

@@ -0,0 +1,36 @@
+/**
+ * 2482. Difference Between Ones and Zeros in Row and Column
+ * https://leetcode.com/problems/difference-between-ones-and-zeros-in-row-and-column/
+ * Difficulty: Medium
+ *
+ * You are given a 0-indexed m x n binary matrix grid.
+ *
+ * A 0-indexed m x n difference matrix diff is created with the following procedure:
+ * - Let the number of ones in the ith row be onesRowi.
+ * - Let the number of ones in the jth column be onesColj.
+ * - Let the number of zeros in the ith row be zerosRowi.
+ * - Let the number of zeros in the jth column be zerosColj.
+ * - diff[i][j] = onesRowi + onesColj - zerosRowi - zerosColj
+ *
+ * Return the difference matrix diff.
+ */
+
+/**
+ * @param {number[][]} grid
+ * @return {number[][]}
+ */
+var onesMinusZeros = function(grid) {
+  const rows = new Array(grid.length).fill(0);
+  const columns = new Array(grid[0].length).fill(0);
+
+  grid.forEach((row, r) => row.forEach((value, c) => {
+    rows[r] += value;
+    columns[c] += value;
+  }));
+
+  grid.forEach((row, r) => row.forEach((value, c) => {
+    grid[r][c] = 2 * rows[r] - grid.length + 2 * columns[c] - row.length;
+  }));
+
+  return grid;
+};