Leetcode Problem 611. Valid Triangle Number

611. Valid Triangle Number

Leetcode Solutions

Approach: Linear Scan

  1. Sort the input array nums.
  2. Initialize count to 0 to store the number of valid triangles.
  3. Iterate over the array with two nested loops, with indices i and j, where i goes from 0 to len(nums) - 2 and j goes from i + 1 to len(nums) - 1.
  4. For each pair (i, j), initialize k to j + 1.
  5. While k < len(nums) and nums[i] + nums[j] > nums[k], increment k.
  6. Add k - j - 1 to count.
  7. Return count.
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Approach: Brute Force

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