public static void Part2()
{
int MatchingPairs = 0;
long A = 512;
long B = 191;
string Abin;
string Bbin;
// Test
//A = 65;
//B = 8921;
for (long i = 0; i < 5000000; i++)
{
do
{
A *= 16807;
A %= 2147483647;
} while (A % 4 != 0);
do
{
B *= 48271;
B %= 2147483647;
} while (B % 8 != 0);
Abin = Convert.ToString(Convert.ToInt64(A), 2);
Bbin = Convert.ToString(Convert.ToInt64(B), 2);
Abin = Abin.PadLeft(32, '0');
Bbin = Bbin.PadLeft(32, '0');
//Console.WriteLine(Abin);
//Console.WriteLine(Bbin);
//Console.WriteLine();
// Prüfen ob die letzten 16 bits übereinstimmen
bool AreEqual = true;
for (int j = 16; j < 32; j++)
{
if (Abin[j] != Bbin[j])
{
AreEqual = false;
break;
}
}
if (AreEqual)
{
MatchingPairs++;
}
}
Console.WriteLine("Matching Pairs: " + MatchingPairs);
// 323
}
public static void Part1()
{
int MatchingPairs = 0;
// Generator A starts with 512
// Generator B starts with 191
long A = 512;
long B = 191;
string Abin;
string Bbin;
// Test
//A = 65;
//B = 8921;
for (long i = 0; i < 40000000; i++)
{
A *= 16807;
B *= 48271;
A %= 2147483647;
B %= 2147483647;
//Console.WriteLine("{0,10} | {1,10}", A, B);
Abin = Convert.ToString(Convert.ToInt64(A), 2);
Bbin = Convert.ToString(Convert.ToInt64(B), 2);
Abin = Abin.PadLeft(32, '0');
Bbin = Bbin.PadLeft(32, '0');
// Prüfen ob die letzten 16 bits übereinstimmen
bool AreEqual = true;
for (int j = 16; j < 32; j++)
{
if (Abin[j] != Bbin[j])
{
AreEqual = false;
break;
}
}
if (AreEqual)
{
MatchingPairs++;
}
}
Console.WriteLine(MatchingPairs);
// 567
}
