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43 lines
1.2 KiB
43 lines
1.2 KiB
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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namespace ex_052_002_problématique_2
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{
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class Program
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{
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static Task<int> GetPrimesCountAsync(int start, int count)
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{
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return Task.Run(() => Enumerable.Range(start, count).Count(n =>
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Enumerable.Range(2, (int)Math.Sqrt(n) - 1).All(i => n % i > 0)));
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}
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static void DisplayPrimeCounts()
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{
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for (int i = 0; i < 10; i++)
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{
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var temp = i;
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var awaiter = GetPrimesCountAsync(temp * 1000000 + 2, 1000000).GetAwaiter();
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awaiter.OnCompleted(() =>
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Console.WriteLine("{0} primes between {1} and {2}",
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awaiter.GetResult(),
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temp * 1000000,
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(temp + 1) * 1000000 - 1));
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}
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Console.WriteLine("Done !");
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}
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static void Main(string[] args)
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{
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Task.Run(() => DisplayPrimeCounts());
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Console.WriteLine("please wait...");
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Console.ReadLine();
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}
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}
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}
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