You are trying to navigate a complicated train system to arrive at your destination in the quickest time possible. Given a system's schematic with start and end points, calculate the shortest length possible.
The schematic will be made up of a number of characters:
- S - start point
- E - end point
- just about any other character - path connecting the stations
It doesn't really matter what character represents the path. Consider the schematic to be a 2D array where every character with the exception of space and x is a valid path point. Diagonal moves are allowed. So every point has 8 possible connection points, and that connection is made if both characters are valid.
The input file DATA4.txt will contain 5 sets of data -- N lines per set, 10 characters in per line, and each set being separated by a line of 'x' characters. 1 <= N <= 5. Each set represents a system schematic as described above.
The output file OUT4.txt will contain 5 lines -- the minimum travel length between S and E points.
Note: The dataset will contain a lot of whitespace, instead of typical dots. Make sure you can handle this data properly.
.- S .-E `-o xxxxxxxxxx -S--- ` ` E | | | `-----` xxxxxxxxxx