From 763fc0430fd934a4da9109ccf49663ec2a4fa614 Mon Sep 17 00:00:00 2001
From: Hidemichi Shimura <hidemichi.shimura@gmail.com>
Date: Wed, 11 Jan 2023 09:54:31 -0800
Subject: [PATCH 1/2] solve 1260. Shift 2D Grid

---
 1260.shift-2d-grid.js | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)
 create mode 100644 1260.shift-2d-grid.js

diff --git a/1260.shift-2d-grid.js b/1260.shift-2d-grid.js
new file mode 100644
index 00000000..565de0ca
--- /dev/null
+++ b/1260.shift-2d-grid.js
@@ -0,0 +1,29 @@
+/* URL of this problem
+ * https://leetcode.com/problems/shift-2d-grid/description/
+ *
+ * @param {number[][]} grid
+ * @param {number} k
+ * @return {number[][]}
+ */
+
+var shiftGrid = function(grid, k) {
+    const Row = grid.length;
+    const Column = grid[0].length;
+    const FlatGrid = grid.flat();
+    const ShiftedGrid = [];
+
+    // Execute the shift operations
+    for (let i = 0; i < k; i++) {
+        FlatGrid.unshift(FlatGrid.pop());
+    }
+    // Create a 2D array after all the shift operations
+    for (let i = 0; i < Row; i++) {
+        const CurrRow = FlatGrid.splice(0, Column);
+        
+        ShiftedGrid.push(CurrRow);
+    }
+
+    return ShiftedGrid;
+};
+
+module.exports = shiftGrid;
\ No newline at end of file

From c1f63e1de177732cb96413fced2beee9466a7884 Mon Sep 17 00:00:00 2001
From: Hidemichi Shimura <hidemichi.shimura@gmail.com>
Date: Wed, 11 Jan 2023 09:54:59 -0800
Subject: [PATCH 2/2] test function shiftGrid

---
 shiftGrid.test.js | 9 +++++++++
 1 file changed, 9 insertions(+)
 create mode 100644 shiftGrid.test.js

diff --git a/shiftGrid.test.js b/shiftGrid.test.js
new file mode 100644
index 00000000..709e831f
--- /dev/null
+++ b/shiftGrid.test.js
@@ -0,0 +1,9 @@
+const shiftGrid = require("../jest-test/1260.shift-2d-grid");
+
+test("Return the array after the shift operations", () => {
+    expect(shiftGrid([[1,2,3],[4,5,6],[7,8,9]], 1)).toEqual([[9,1,2],[3,4,5],[6,7,8]]);
+});
+
+test("Return the original 2D array if the argument k is 0", () => {
+    expect(shiftGrid([[1,2,3],[4,5,6],[7,8,9]], 0)).toEqual([[1,2,3],[4,5,6],[7,8,9]]);
+});
\ No newline at end of file