C# 使用 LINQ 仅打印整数数组中所有元素的值小于平均值的数字

语言集成查询 (LINQ) 是 C# 中用于从不同来源检索数据的统一查询语法。它消除了编程语言和数据库之间的不匹配，还为不同类型的数据源提供了单一的查询接口。在本文中，我们将学习如何使用 C# 中的 LINQ 仅打印值小于整数数组中所有元素的平均值的数字。

例子：

Input: 464, 23, 123, 456, 765, 345, 896, 13, 4
Output: Average is 343
So the numbers less than the average are:
23 123 13 4 

Input: 264, 3, 223, 556, 1, 965, 145, 2, 14
Output: Average is 241
So the numbers less than the average are:
3 223 1 145 2 14

方法：

To print only those numbers whose value is less than average of all elements in an array we use the following approach:

Store integer(input) in an array.
The sum of the elements is calculated using the Sum() method.
The average of the array is calculated by dividing the sum by the length of the array.
By using the LINQ query we will store the numbers less than the average of the array in an iterator.
Now the iterator is iterated and the integers are printed.

编程需要懂一点英语

例子：

C#

// C# program to display only those numbers whose value is
// less than average of all elements in an array using LINQ
using System;
using System.Linq;
  
class GFG{
      
static void Main()
{
      
    // Storing integers in an array
    int[] Arr = { 464, 23, 123, 456, 765, 345, 896, 13, 4 };
    
    // Find the sum of array
    int total = Arr.Sum();
      
    // Find the average of array
    int avg = total / Arr.Length;
      
    // Store the numbers in an iterator
    var nums = from num in Arr where num < avg select num;
      
    // Display the result
    Console.WriteLine("Average is " + avg);
    Console.WriteLine("The Numbers:");
    foreach(int n in nums)
    {
        Console.Write(n + " ");
    }
    Console.WriteLine();
}
}

输出：

Average is 343
The Numbers:
23 123 13 4