C#

string TextToParse= "mississippi";
string TextToSearch= "i";
int Found = 0;
for(int startpoint=TextToParse.IndexOf(TextToSearch,0);startpoint>-1;startpoint = TextToParse.IndexOf(TextToSearch,startpoint+1))
{
    Found++;
}

string test = "this is the test to see if this returns three to this string";
string stringToFind = "this";


Console.Write(new Regex(stringToFind, RegexOptions.Multiline).Count);

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

namespace RegExTest
{
    class Program
    {
        static void Main(string[] args)
        {
            string test = "this is the test to see if this returns three to this string";
            Console.WriteLine(new Regex(stringToFind, RegexOptions.Multiline).Count);
        }
    }
}

Console.WriteLine( new Regex(stringToFind, RegexOptions.Multiline).Matches(test).Count);

for(int loop = 0;loop<10000; loop++)
{
	Found=0;
	for(int startpoint=TextToParse.IndexOf(TextToSearch,0);startpoint>-1;startpoint = TextToParse.IndexOf(TextToSearch,startpoint+1))
	{
		Found++;
	}
}

for(int loop = 0;loop<10000; loop++)
{
	Found = new Regex(TextToSearch, RegexOptions.Multiline).Matches(TextToParse).Count;
}

//Start: fill array
int[][] array = new int[5][];
for(int x=0;x<5;x++)
{
	array[x] = new int[5];
}
 
for(int y = 0; y<array.Length; y++)
{
	int[] actArray = array[y];
	for(int x = 1; x<= actArray.Length; x++)
	{
		actArray[x-1] = x;
	}
}
//End: fill array
  
//Start: your task
for(int x=1;x<5;x=x+2)
{
	int[] actArray = new int[array[x].Length];
        array[x].CopyTo(actArray,0);
	for(int y = 0; y< array.Length; y++)
	{
		array[x][y] = actArray[array.Length-1-y];
	}
}
//End: your task

zeeShan anSari wrote:

I can't understand......