linq where集合计数大于

using System;
using System.Collections.Generic;
using System.Linq;

class Program
{
    static void Main()
    {
        List<int> numbers = new List<int> { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };

        // 筛选出大于5的数字并计数
        int count = numbers.Where(n => n > 5).Count();

        Console.WriteLine($"大于5的数字数量: {count}");
    }
}

using System;
using System.Collections.Generic;
using System.Linq;

class Program
{
    static void Main()
    {
        List<int> numbers = new List<int> { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };

        // 错误的筛选条件
        int count = numbers.Where(n => n > 10).Count();

        Console.WriteLine($"大于10的数字数量: {count}"); // 输出结果应为0
    }
}

using System;
using System.Collections.Generic;
using System.Linq;

class Program
{
    static void Main()
    {
        List<int> numbers = new List<int> { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 10 };

        // 检查数据源是否有重复元素
        int count = numbers.Where(n => n > 5).Distinct().Count();

        Console.WriteLine($"大于5的唯一数字数量: {count}"); // 输出结果应为5
    }
}