The Pathfinder Challenges: Part 1

Question

Warm up

You are given a multi line string of integers representing a square grid. Every digit corresponds to a tile and signifies how long it takes to traverse this tile. If it's a zero, this tile cannot be traversed.
You can move down and right. Your task is to write a function, which will return the time it takes to traverse the fastest path from the top left to the bottom right corner or -1, if there is no such path. The start and end point can be assumed to be traversible.

Answer 1

https://code.sololearn.com/cBo2vcY39488/#java

Answer 2

Sample inputs:

12345
98099
02211
returns 17

1110
1101
returns -1

32284713
46350756
38570719
returns 42

Sample solution:
https://code.sololearn.com/cBld2iG7YPKa