How to convert the specific law of one-dimensional array into two-dimensional array?

Question

Like this

string[]  strarry = [12, 34, A1, FE, 12, 34, EA, 0, FE]

12 is the beginning , FE is the end, Turn into

string strarry = [[12,34,A1,FE], [12,34,EA,0,FE]];

The distance from 12 to FE is not necessarily fixed (4)

How can I do it? Thank you

Answer 1

If I've understood you right (you want to obtain jagged array string[][] from ordinal one - string[]), you can try Linq in order to GroupBy items into subarrays:

  using System.Linq;

  ...

  string[] strarry = new string[]
    {"12", "34", "A1", "FE", "12", "34", "EA", "0", "FE"};

  // Here we exploit side effects, be careful with them
  int groupIndex = 0;

  string[][] result = strarry
    .GroupBy(value => value == "FE" ? groupIndex++ : groupIndex)
    .Select(group => group.ToArray())
    .ToArray();

Let's have a look:

  string report = string.Join(Environment.NewLine, result
    .Select(line => "[" + string.Join(", ", line) + "]"));

  Console.Write(report);

Outcome:

[12, 34, A1, FE]
[12, 34, EA, 0, FE]