#include <iostream>
#include <string>
#include <sstream>

using namespace std;

string intToStr(int);
bool isNumber(char);
bool isNegate(char);

int main(int argv, char** argc) {
    if (argv < 2) {
        cout << "usage: \n"
             << argc[0] << " list,of,integers\n";
        return 1;
    }

    string list = argc[1], output;
    bool start = true, chain = false, negate = false;
    int current = 0, next = 0, i = 0;
    
    while (isNumber(list[i]) || isNegate(list[i])) {
        if (isNumber(list[i])) {
            current = (current * 10) + (list[i] - '0');
        } else {
            negate = !negate;
        }
        i++;
    }
    if (negate) {
        current *= -1;
    }
    
    while (i < list.length()) {
        negate = false;
        next = 0;
        
        if (isNumber(list[i]) || isNegate(list[i])) {
            while(isNumber(list[i]) || isNegate(list[i])) {
                if (isNumber(list[i])) {
                    next = (next * 10) + (list[i] - '0');
                } else {
                    negate = !negate;
                }
                i++;
            }
            if (negate) {
                next *= -1;
            }
            
            if (next - 1 == current) {
                if (!chain) {
                    if (start) {
                        start = false;
                    } else {
                        output += ',';
                    }
                    output += intToStr(current) + '-';
                    chain = true;
                }
            } else {
                if (chain) {
                    output += intToStr(current);
                    chain = false;
                } else {
                    if (start) {
                        start = false;
                    } else {
                        output += ',';
                    }
                    output += intToStr(current);
                }
            }
            current = next;
        } else {
            i++;
        }
    }
    
    if (chain || start) {
        output += intToStr(next);
    } else {
        output += ',' + intToStr(next);
    }
    cout << output << endl;
    return 0;
}

string intToStr(int x) {
    ostringstream o;
    o << x;
    return o.str();
}

bool isNumber(char x) {
    return x <= '9' && x >= '0';
}

bool isNegate(char x) {
    return x == '-';
}

<?
/* Challenge #2
Pascal Triangle
$_GET['level'] represents the triangle's level.
*/

$level = $_GET['level'];
$triangle = array();

$triangle[0][0] = 1;
for ($i = 1; $i < $level; $i++)
{
    $triangle[$i][0] = 1;
    $triangle[$i][count($triangle[$i-1])] = 1;
    for ($j = 1; $j < count($triangle[$i-1]); $j++)
    {
        $triangle[$i][$j] = $triangle[$i-1][$j-1] + $triangle[$i-1][$j];
    }
}

echo "<table>";
for ($i = 0; $i < $level; $i++)
{
    echo "<tr>";
    for ($j = 0; $j < count($triangle[$i]); $j++)
        echo "<td>".$triangle[$i][$j]."</td>";
    echo "</tr>";
}
echo "</table>";
?>

 class Program
{
static void Main(string[] args)
{
//Initialize Timer
DateTime startTime = DateTime.Now;
 
//Set Roof
decimal iRoof = 9999999999M;
//Go
for (decimal i = iRoof; i > 0; i--)
{
bool bResult = CheckNumber(i);
if (bResult)
{
Console.WriteLine(AssembleNumber(i).ToString());
break;
}
}
//Stop Timer
DateTime stopTime = DateTime.Now;
//Calculate Time and Display
TimeSpan duration = stopTime - startTime;
Console.WriteLine("Execution Time: " + duration);
//Keep the Window Open
Console.WriteLine("\r\nq <enter> to quit.");
while (Console.Read() != 'q') ;
}
static bool PrimeCheck(decimal iNumber)
{
//11 13 17 19 23 29 
if (iNumber % 29 != 0)
return false;
if (iNumber % 23 != 0)
return false;
if (iNumber % 19 != 0)
return false;
if (iNumber % 17 != 0)
return false;
if (iNumber % 13 != 0)
return false;
if (iNumber % 11 != 0)
return false;
return true;
}
static bool CheckNumber(decimal dblNumber)
{ 
//Assemble Number
decimal dblPalindrome = AssembleNumber(dblNumber);
//Check Prime
if (PrimeCheck(dblPalindrome))
{
return true;
}
else
{
return false;
}
}
static decimal AssembleNumber(decimal dblNumber)
{
string tFirst = dblNumber.ToString();
char[] arLast = dblNumber.ToString().ToCharArray();
Array.Reverse(arLast);
string tLast = new string(arLast); 
 
return Convert.ToDecimal(tFirst + tLast);
}
}

Public Class Form1

    Public a As Decimal = 99999999999999999999D

    Public Sub go()
        Me.Text = "Running..."
        Dim time1 As Decimal = Now.Ticks
        For h As Integer = 0 To 9
            For g As Integer = 0 To 9
                For f As Integer = 0 To 9
                    For e As Integer = 0 To 9
                        For d As Integer = 0 To 9
                            For c As Integer = 0 To 9
                                For b As Integer = 0 To 9
                                    If frac(a / 30808063) = 0 Then GoTo 1
                                    a -= 11000000000D
                                Next
                                a += 9900000000D
                            Next
                            a += 990000000D
                        Next
                        a += 99000000D
                    Next
                    a += 9900000D
                Next
                a += 990000D
            Next
            a += 99000D
        Next
        MessageBox.Show(a & Environment.NewLine & "Multiple not Found...")
        GoTo 2
1:      Dim time2 As Decimal = Now.Ticks
        Me.Text = "Complete"
        Dim processtime As Decimal = ((time2 - time1) / 10000000)
        MessageBox.Show(a & Environment.NewLine & "Processing Time: " & processtime, "Complete", MessageBoxButtons.OK, MessageBoxIcon.Information)
        TextBox1.Text = a
2:
    End Sub

    Public Function frac(ByVal num As Decimal)
        Return Math.Floor(num) - num
    End Function

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        a = 99999999999999999999D
        go()
    End Sub
End Class