Added solution for 1260

Author: chirag64

01260. Shift 2D Grid.rs

@@ -0,0 +1,27 @@
+impl Solution {
+    pub fn shift_grid(grid: Vec<Vec<i32>>, k: i32) -> Vec<Vec<i32>> {
+        let rows = grid.len();
+        let cols = grid[0].len();
+        let mut old_grid = grid.to_vec();
+        let mut new_grid = grid.to_vec();
+
+        // Do the entire operation k times
+        for x in 0..k {
+            // Shift entire column by 1
+            for y in 0..rows {
+                for z in 0..cols {
+                    new_grid[y][(z + 1) % cols] = old_grid[y][z];
+                }
+            }
+            
+            // Shift entire first row by -1
+            for y in 0..rows {
+                new_grid[y][0] = old_grid[(y + rows - 1) % rows][cols - 1];
+            }
+            
+            // Update old grid to new grid
+            old_grid = new_grid.to_vec();
+        }
+        return new_grid;
+    }
+}