Valid Triangle Number - Video Solutions

MediumArrayTwo PointersBinary SearchGreedySorting

Triangle - Dynamic Programming made Easy - Leetcode 120

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10 video solutions available

Valid Triangle Number - Video Solution

Watch 10 video solutions for Valid Triangle Number, a medium level problem involving Array, Two Pointers, Binary Search. This walkthrough by NeetCode has 56,666 views views. Want to try solving it yourself? Practice on FleetCode or read the detailed text solution.

Problem Statement

Given an integer array nums, return the number of triplets chosen from the array that can make triangles if we take them as side lengths of a triangle.

Example 1:

Input: nums = [2,2,3,4]
Output: 3
Explanation: Valid combinations are: 
2,3,4 (using the first 2)
2,3,4 (using the second 2)
2,2,3

Example 2:

Input: nums = [4,2,3,4]
Output: 4

Constraints:

1 <= nums.length <= 1000
0 <= nums[i] <= 1000

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Valid Triangle Number - Video Solutions

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Problem Statement

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