Add solution #2133

JoshCrozier · JoshCrozier · commit 55482a763f68 · 2025-05-13T22:43:06.000-05:00
diff --git a/README.md b/README.md
@@ -1,4 +1,4 @@
-# 1,767 LeetCode solutions in JavaScript
+# 1,768 LeetCode solutions in JavaScript
 
 [https://leetcodejavascript.com](https://leetcodejavascript.com)
 
@@ -1634,6 +1634,7 @@
 2130|[Maximum Twin Sum of a Linked List](./solutions/2130-maximum-twin-sum-of-a-linked-list.js)|Medium|
 2131|[Longest Palindrome by Concatenating Two Letter Words](./solutions/2131-longest-palindrome-by-concatenating-two-letter-words.js)|Medium|
 2132|[Stamping the Grid](./solutions/2132-stamping-the-grid.js)|Hard|
+2133|[Check if Every Row and Column Contains All Numbers](./solutions/2133-check-if-every-row-and-column-contains-all-numbers.js)|Easy|
 2140|[Solving Questions With Brainpower](./solutions/2140-solving-questions-with-brainpower.js)|Medium|
 2145|[Count the Hidden Sequences](./solutions/2145-count-the-hidden-sequences.js)|Medium|
 2154|[Keep Multiplying Found Values by Two](./solutions/2154-keep-multiplying-found-values-by-two.js)|Easy|
diff --git a/solutions/2133-check-if-every-row-and-column-contains-all-numbers.js b/solutions/2133-check-if-every-row-and-column-contains-all-numbers.js
@@ -0,0 +1,33 @@
+/**
+ * 2133. Check if Every Row and Column Contains All Numbers
+ * https://leetcode.com/problems/check-if-every-row-and-column-contains-all-numbers/
+ * Difficulty: Easy
+ *
+ * An n x n matrix is valid if every row and every column contains all the integers from 1
+ * to n (inclusive).
+ *
+ * Given an n x n integer matrix matrix, return true if the matrix is valid. Otherwise,
+ * return false.
+ */
+
+/**
+ * @param {number[][]} matrix
+ * @return {boolean}
+ */
+var checkValid = function(matrix) {
+  const n = matrix.length;
+
+  for (let i = 0; i < n; i++) {
+    const rowSet = new Set();
+    const colSet = new Set();
+
+    for (let j = 0; j < n; j++) {
+      rowSet.add(matrix[i][j]);
+      colSet.add(matrix[j][i]);
+    }
+
+    if (rowSet.size !== n || colSet.size !== n) return false;
+  }
+
+  return true;
+};
