The Complete Guide to Triangle Minimum Path Sum: From Brute Force to System Design
Triangle Minimum Path Sum: Given a triangle array, return the minimum path sum from top to bottom. Key Constraint: From position (i, j), you can only move to (i+1, j) or (i+1, j+1). Example: [2] [3,4] [6,5,7] [4,1,8,3] Minimum path: 2 → 3 → 5 → 1 = 11 Quick Start: The 5-Minute Solution Intuition (Think Like a Human) Imagine you’re at the top and need to reach the bottom with minimum cost. At each step, ask: “Which path below me is cheaper?” ...