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You are given an array of positive integers nums of length n. A polygon is a closed plane figure that has at least 3 sides. The longest side of a polygon is smaller than the sum of its other sides. Conversely, if you have k (k >= 3) positive real numbers a1, a2, a3, ..., ak where a1 <= a2 <= a3 <= ... <= ak and a1 + a2 + a3 + ... + ak-1 > ak, then there always exists a polygon with k sides whose lengths are a1, a2, a3, ..., ak. The perimeter of a polygon is the sum of lengths of its sides. Return the largest possible perimeter of a polygon whose sides can be formed from nums, or -1 if it is not possible to create a polygon. Example 1: Input: nums = [5,5,5] Output: 15 Explanation: The only possible polygon that can be made from nums has 3 sides: 5, 5, and 5. The perimeter is 5 + 5 + 5 = 15. Example 2: Input: nums = [1,12,1,2,5,50,3] Output: 12 Explanation: The polygon with the largest perimeter which can be made from nums has 5 sides: 1, 1, 2, 3, and 5. The perimeter is 1 + 1 + 2 + 3 + 5 = 12. We cannot have a polygon with either 12 or 50 as the longest side because it is not possible to include 2 or more smaller sides that have a greater sum than either of them. It can be shown that the largest possible perimeter is 12. Example 3: Input: nums = [5,5,50] Output: -1 Explanation: There is no possible way to form a polygon from nums, as a polygon has at least 3 sides and 50 > 5 + 5
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PHP Laravel Developer

Interviewed at Jewel Pro Tech

3.9★
Jun 18, 2024

You are given an array of positive integers nums of length n. A polygon is a closed plane figure that has at least 3 sides. The longest side of a polygon is smaller than the sum of its other sides. Conversely, if you have k (k >= 3) positive real numbers a1, a2, a3, ..., ak where a1 <= a2 <= a3 <= ... <= ak and a1 + a2 + a3 + ... + ak-1 > ak, then there always exists a polygon with k sides whose lengths are a1, a2, a3, ..., ak. The perimeter of a polygon is the sum of lengths of its sides. Return the largest possible perimeter of a polygon whose sides can be formed from nums, or -1 if it is not possible to create a polygon. Example 1: Input: nums = [5,5,5] Output: 15 Explanation: The only possible polygon that can be made from nums has 3 sides: 5, 5, and 5. The perimeter is 5 + 5 + 5 = 15. Example 2: Input: nums = [1,12,1,2,5,50,3] Output: 12 Explanation: The polygon with the largest perimeter which can be made from nums has 5 sides: 1, 1, 2, 3, and 5. The perimeter is 1 + 1 + 2 + 3 + 5 = 12. We cannot have a polygon with either 12 or 50 as the longest side because it is not possible to include 2 or more smaller sides that have a greater sum than either of them. It can be shown that the largest possible perimeter is 12. Example 3: Input: nums = [5,5,50] Output: -1 Explanation: There is no possible way to form a polygon from nums, as a polygon has at least 3 sides and 50 > 5 + 5

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