Create 2971-find-polygon-with-the-largest-perimeter.py

Author: a93a

python/2971-find-polygon-with-the-largest-perimeter.py

@@ -0,0 +1,25 @@
+# Time complexity O(nlogn)
+class Solution:
+    def largestPerimeter(self, nums: List[int]) -> int:
+        nums.sort()
+        res = -1
+        total = 0
+
+        for n in nums:
+            if total > n:
+                res = total + n
+            total += n
+        
+        return res
+
+# Time complexity O(n + 30logn) ~ O(n)
+class Solution:
+    def largestPerimeter(self, nums: List[int]) -> int:
+        curSum = sum(nums)
+        heapq._heapify_max(nums)
+
+        while nums and curSum <= nums[0] * 2:
+            curSum -= heapq._heappop_max(nums)
+            
+        return curSum if len(nums) > 2 else -1
+