aboutsummaryrefslogtreecommitdiff
path: root/largest_perimeter_triangle.py
diff options
context:
space:
mode:
Diffstat (limited to 'largest_perimeter_triangle.py')
-rw-r--r--largest_perimeter_triangle.py26
1 files changed, 26 insertions, 0 deletions
diff --git a/largest_perimeter_triangle.py b/largest_perimeter_triangle.py
new file mode 100644
index 0000000..4ee442c
--- /dev/null
+++ b/largest_perimeter_triangle.py
@@ -0,0 +1,26 @@
+# 976. Largest Perimeter Triangle
+
+"""
+given an integer array 'nums', return the largest perimeter of a triangle
+with a non-zero area, formed from three of these lengths. if it is impossible
+to form any triangle of a non-zero area, return 0.
+"""
+
+
+class Solution(object):
+ def largestPerimeter(self, nums):
+ """
+ :type nums: List[int]
+ :rtype: int
+ """
+ nums = sorted(nums)[::-1]
+ for i in range(len(nums) - 2):
+ if nums[i] < nums[i + 1] + nums[i + 2]:
+ return nums[i] + nums[i + 1] + nums[i + 2]
+ return 0
+
+
+if __name__ == "__main__":
+ obj = Solution()
+ print(obj.largestPerimeter(nums=[2, 1, 2]))
+ print(obj.largestPerimeter(nums=[3, 2, 3, 4]))