add 3238

Author: fishercoder1534

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

@@ -1,5 +1,6 @@
 | #    | Title                                                                                                                                                               | Solutions                                                                                                                         | Video                                                                         | Difficulty | Tag                                                                  
 |------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------|-------------------------------------------------------------------------------|------------|----------------------------------------------------------------------
+| 3238 | [Find the Number of Winning Players](https://leetcode.com/problems/find-the-number-of-winning-players/)                                                                 | [Java](https://github.com/fishercoder1534/Leetcode/blob/master/src/main/java/com/fishercoder/solutions/fourththousand/_3238.java) |                                                                               | Easy       |
 | 3237 | [Alt and Tab Simulation](https://leetcode.com/problems/alt-and-tab-simulation/)                                                                 | [Java](https://github.com/fishercoder1534/Leetcode/blob/master/src/main/java/com/fishercoder/solutions/fourththousand/_3237.java) |                                                                               | Medium     | 
 | 3234 | [Count the Number of Substrings With Dominant Ones](https://leetcode.com/problems/count-the-number-of-substrings-with-dominant-ones/)                                                                 | [Java](https://github.com/fishercoder1534/Leetcode/blob/master/src/main/java/com/fishercoder/solutions/fourththousand/_3234.java) |                                                                               | Medium     | Sliding Window
 | 3233 | [Find the Count of Numbers Which Are Not Special](https://leetcode.com/problems/find-the-count-of-numbers-which-are-not-special/)                                                                 | [Java](https://github.com/fishercoder1534/Leetcode/blob/master/src/main/java/com/fishercoder/solutions/fourththousand/_3233.java) |                                                                               | Medium     | Math

Diff for: src/main/java/com/fishercoder/solutions/fourththousand/_3238.java

@@ -0,0 +1,31 @@
+package com.fishercoder.solutions.fourththousand;
+
+import java.util.HashMap;
+import java.util.Map;
+
+public class _3238 {
+    public static class Solution1 {
+        public int winningPlayerCount(int n, int[][] pick) {
+            int winners = 0;
+            Map<Integer, int[]> map = new HashMap<>();
+            for (int[] p : pick) {
+                int player = p[0];
+                int color = p[1];
+                int[] colors = map.getOrDefault(player, new int[11]);
+                colors[color]++;
+                map.put(player, colors);
+            }
+            for (Map.Entry<Integer, int[]> entry : map.entrySet()) {
+                int player = entry.getKey();
+                int[] colors = entry.getValue();
+                for (int c : colors) {
+                    if (c >= player + 1) {
+                        winners++;
+                        break;
+                    }
+                }
+            }
+            return winners;
+        }
+    }
+}