*

college/web/loop.js

@@ -0,0 +1,15 @@
+let matrix = [];
+
+for (let row = 1; row <= 4; row++) {
+  let nums = [];
+  let num = row + 1;
+
+  for (let col = 1; col <= 5; col++) {
+    nums.push(num);
+    num += row + 1;
+  }
+
+  matrix.push(nums);
+}
+
+console.log(matrix);