diff --git "a/leetcode3/\354\227\274\355\230\234\354\240\225/3774. Absolute Difference Between Maximum and Minimum K Elements.java" "b/leetcode3/\354\227\274\355\230\234\354\240\225/3774. Absolute Difference Between Maximum and Minimum K Elements.java"
new file mode 100644
index 00000000..d563d5e1
--- /dev/null
+++ "b/leetcode3/\354\227\274\355\230\234\354\240\225/3774. Absolute Difference Between Maximum and Minimum K Elements.java"	
@@ -0,0 +1,15 @@
+// 오름차순 정렬 후 0 ~ k / nums.length - k
+// O(n)
+
+class Solution {
+    public int absDifference(int[] nums, int k) {
+        Arrays.sort(nums);
+        int large = 0;
+        int small = 0;
+
+        for (int i = 0; i< k; i++) large += nums[i];
+        for (int i = nums.length-1; i>=nums.length-k; i--) small += nums[i];
+
+        return (int) Math.abs(large - small);
+    }
+}