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Grokking the Coding Interview Patterns in C++

Solution: Minimum Path Sum

Explore how to compute the minimum path sum in a grid from top-left to bottom-right by moving only right or down. Understand dynamic programming techniques, reuse the input grid for optimization, and analyze time and space complexities of the solution.

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Statement

You are given an m × n grid containing non-negative integers. Your task is to find a path from the top-left cell to the bottom-right cell that minimizes the sum of the values along the path. At each step, you may move only right or down.

Constraints:

  • m == grid.length

  • n == grid[i].length ...