diff --git a/src/main/java/com/cool/ling_cha_mount/sliding_windows/Num2779.java b/src/main/java/com/cool/ling_cha_mount/sliding_windows/Num2779.java
new file mode 100644
index 0000000..71293b3
--- /dev/null
+++ b/src/main/java/com/cool/ling_cha_mount/sliding_windows/Num2779.java
@@ -0,0 +1,28 @@
+package com.cool.ling_cha_mount.sliding_windows;
+
+import java.util.Arrays;
+
+/**
+ * Created with IntelliJ IDEA.
+ *
+ * @Author: Cool
+ * @Date: 2024/10/23/23:48
+ * @Description: 2779. 数组的最大美丽值
+ * Score 1638
+ */
+public class Num2779 {
+    public int maximumBeauty(int[] nums, int k) {
+        Arrays.sort(nums);
+        int left=0;
+        int res=0;
+        for(int i=0;i<nums.length;i++){
+            if((nums[i]-2*k)>nums[left]){
+                res=Math.max(res,i-left);
+                while(nums[i]-2*k>nums[++left]){
+
+                }
+            }
+        }
+        return Math.max(res,nums.length-left);
+    }
+}