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Ingy döt Net 2023-07-01 11:58:00 -04:00
parent 7387c8f97b
commit cb5bb5e222
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Task/100-prisoners/C-sharp/100-prisoners.cs Normal file
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using System;
using System.Linq;
namespace Prisoners {
class Program {
static bool PlayOptimal() {
var secrets = Enumerable.Range(0, 100).OrderBy(a => Guid.NewGuid()).ToList();
for (int p = 0; p < 100; p++) {
bool success = false;
var choice = p;
for (int i = 0; i < 50; i++) {
if (secrets[choice] == p) {
success = true;
break;
}
choice = secrets[choice];
}
if (!success) {
return false;
}
}
return true;
}
static bool PlayRandom() {
var secrets = Enumerable.Range(0, 100).OrderBy(a => Guid.NewGuid()).ToList();
for (int p = 0; p < 100; p++) {
var choices = Enumerable.Range(0, 100).OrderBy(a => Guid.NewGuid()).ToList();
bool success = false;
for (int i = 0; i < 50; i++) {
if (choices[i] == p) {
success = true;
break;
}
}
if (!success) {
return false;
}
}
return true;
}
static double Exec(uint n, Func<bool> play) {
uint success = 0;
for (uint i = 0; i < n; i++) {
if (play()) {
success++;
}
}
return 100.0 * success / n;
}
static void Main() {
const uint N = 1_000_000;
Console.WriteLine("# of executions: {0}", N);
Console.WriteLine("Optimal play success rate: {0:0.00000000000}%", Exec(N, PlayOptimal));
Console.WriteLine(" Random play success rate: {0:0.00000000000}%", Exec(N, PlayRandom));
}
}
}