Three That Hold

A medium Python interview practice problem on DataDriven. Write and execute real python code with instant grading.

Domain

Python

Difficulty

medium

Seniority

L5

Problem

You're auditing a batch of rod lengths pulled from a parts inventory to see how many real triangles could be built from them. Count the groups of three rods that can form a valid triangle, where each side must be shorter than the sum of the other two. Rods sitting at different positions count as separate groups even when their lengths match, and the order of sides within a group does not matter.

Summary

Not every triangle is a triangle.

Practice This Problem

Solve this Python problem with real code execution. DataDriven runs your Python code in a real environment and grades it automatically.