string test, C# - rextester

string test

//Rextester.Program.Main is the entry point for your code. Don't change it.
//Compiler version 4.0.30319.17929 for Microsoft (R) .NET Framework 4.5

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text.RegularExpressions;

namespace Rextester
{
    public class Program
    {
        public static void Main(string[] args)
        {
            //Your code goes here
            /*
            string email = "Bla bla hello my friend THIS IS THE STUFF I WANTGoodbye my friend";
            int startPos = email.LastIndexOf("hello my friend") + "hello my friend".Length + 1;
            int length = email.IndexOf("Goodbye my friend") - startPos;
            string sub = email.Substring(startPos, length);
            //Console.WriteLine(email.LastIndexOf("hello my friend"));*/
            
            string math = "11 456/789";
            
            if (math.IndexOf(" ")!=-1) {
                int lengthInt = math.IndexOf(" ");
                int startPos = math.IndexOf(" ")+1;
                int lengthNum = math.IndexOf("/")-math.IndexOf(" ")-1;

Console.WriteLine(math.Substring(0,lengthInt)); // integer
                Console.WriteLine(math.Substring(startPos,lengthNum)); // numerator
                Console.WriteLine(math.Substring(math.IndexOf("/")+1)); // denominator
            }
            else {
                Console.WriteLine(math.Substring(0,math.IndexOf("/"))); // numerator
                Console.WriteLine(math.Substring(math.IndexOf("/")+1)); // denominator
            }
        }
    }
}


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