add 3248

Author: fishercoder1534

Diff for: paginated_contents/algorithms/4th_thousand/README.md

@@ -1,5 +1,6 @@
 | #    | Title                                                                                                                                                               | Solutions                                                                                                                         | Video                                                                         | Difficulty | Tag                                                                  
 |------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------|-------------------------------------------------------------------------------|------------|----------------------------------------------------------------------
+| 3248 | [Snake in Matrix](https://leetcode.com/problems/snake-in-matrix/)                                                                 | [Java](https://github.com/fishercoder1534/Leetcode/blob/master/src/main/java/com/fishercoder/solutions/fourththousand/_3248.java) |                                                                               | Easy       |
 | 3243 | [Shortest Distance After Road Addition Queries I](https://leetcode.com/problems/shortest-distance-after-road-addition-queries-i/)                                                                 | [Java](https://github.com/fishercoder1534/Leetcode/blob/master/src/main/java/com/fishercoder/solutions/fourththousand/_3243.java) |                                                                               | Medium     |
 | 3242 | [Design Neighbor Sum Service](https://leetcode.com/problems/design-neighbor-sum-service/)                                                                 | [Java](https://github.com/fishercoder1534/Leetcode/blob/master/src/main/java/com/fishercoder/solutions/fourththousand/_3242.java) |                                                                               | Easy       |
 | 3241 | [Time Taken to Mark All Nodes](https://leetcode.com/problems/time-taken-to-mark-all-nodes/)                                                                 | [Java](https://github.com/fishercoder1534/Leetcode/blob/master/src/main/java/com/fishercoder/solutions/fourththousand/_3241.java) |                                                                               | Hard       |

Diff for: src/main/java/com/fishercoder/solutions/fourththousand/_3248.java

@@ -0,0 +1,23 @@
+package com.fishercoder.solutions.fourththousand;
+
+import java.util.List;
+
+public class _3248 {
+    public static class Solution1 {
+        public int finalPositionOfSnake(int n, List<String> commands) {
+            int[] pos = new int[2];
+            for (String command : commands) {
+                if (command.equals("RIGHT")) {
+                    pos[1]++;
+                } else if (command.equals("DOWN")) {
+                    pos[0]++;
+                } else if (command.equals("UP")) {
+                    pos[0]--;
+                } else if (command.equals("LEFT")) {
+                    pos[1]--;
+                }
+            }
+            return pos[0] * n + pos[1];
+        }
+    }
+}