From 82e4f683b69b7cdde5d385ba13fa9abbd68c0225 Mon Sep 17 00:00:00 2001
From: Jinyoung Jeong <80400463+jyoung2419@users.noreply.github.com>
Date: Fri, 30 Oct 2026 16:58:26 +0900
Subject: [PATCH] Create  4088. Difference Between Peaks and Valleys

---
 ...4088. Difference Between Peaks and Valleys" | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)
 create mode 100644 "leetcode3/\354\240\225\354\247\204\354\230\201/4088. Difference Between Peaks and Valleys"

diff --git "a/leetcode3/\354\240\225\354\247\204\354\230\201/4088. Difference Between Peaks and Valleys" "b/leetcode3/\354\240\225\354\247\204\354\230\201/4088. Difference Between Peaks and Valleys"
new file mode 100644
index 00000000..f6661b6e
--- /dev/null
+++ "b/leetcode3/\354\240\225\354\247\204\354\230\201/4088. Difference Between Peaks and Valleys"	
@@ -0,0 +1,18 @@
+/**
+ * @param {number[]} nums
+ * @return {number}
+ */
+var peakValleyDifference = function(nums) {
+    let peakSum = 0;
+    let valleySum = 0;
+
+    for (let i = 1; i < nums.length - 1; i++){
+        if (nums[i] > nums[i-1] && nums[i] > nums[i+1]){
+            peakSum += nums[i];
+        } else if (nums[i] < nums[i - 1] && nums[i] < nums[i + 1]) {
+            valleySum += nums[i];
+        }
+    }
+
+    return (peakSum - valleySum);
+};