2210. count Hills and valleys in an Array

Author: SjxSubham

2210. count Hills and valleys in an Array

@@ -0,0 +1,13 @@
+//................................
+ int countHillValley(vector<int>& nums) {
+        int ans = 0;
+        int left = nums[0];
+
+        for(int i=1; i<nums.size()-1 ;i++)
+            if(left < nums[i] && nums[i] > nums[i+1] || //Hill
+                left > nums[i] && nums[i] < nums[i+1]){ //valeys
+                    ans++;
+                    left = nums[i];
+                }
+        return ans;
+    }