Linq 合集 交集 补集 去重

using System;
using System.Linq;

namespace LinqDemo
{
    /// <summary>
    ///     https://www.cnblogs.com/LifeDecidesHappiness/p/8079214.html
    ///     Linq 合集 交集 补集 去重
    ///     LDH @ 2021-9-15
    /// </summary>
    internal class Program
    {
        private static void Main()
        {
            Console.Title = "Linq 合集 交集 补集 去重";

            UseLinq();

            Console.ReadKey();
        }

        /// <summary>
        ///     Linq 合集 交集 补集 去重
        /// </summary>
        private static void UseLinq()
        {
            int[] numbersA = { 0, 2, 4, 5, 6, 8, 9 };
            int[] numbersB = { 1, 3, 5, 7, 8 };

            //  合集
            var unionResults = numbersA.Union(numbersB);

            Console.WriteLine("━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━  Union  ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━");
            foreach (var unionResult in unionResults) Console.WriteLine(unionResult);

            //  交集
            var intersectResults = numbersA.Intersect(numbersB);

            Console.WriteLine(
                "━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━  Intersect  ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━");
            foreach (var intersectResult in intersectResults) Console.WriteLine(intersectResult);

            //  补集
            var exceptResults = numbersA.Except(numbersB);

            Console.WriteLine("━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━  Except  ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━");
            foreach (var exceptResult in exceptResults) Console.WriteLine(exceptResult);

            // 去重
            int[] numbers = { 0, 2, 2, 3, 3, 5, 5, 6, 8, 8, 8 };
            var removeSameResults = numbers.Distinct();

            Console.WriteLine(
                "━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━  Distinct  ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━");
            foreach (var removeSameResult in removeSameResults) Console.WriteLine(removeSameResult);
        }
    }
}