Sort Array In C# Without Using Inbuilt Function

In this blog, we will learn to sort an array in C# without using an inbuilt C# function. We will learn ascending order and descending order an array with a simple example.

In this blog, we will learn to sort an array in C# without using an inbuilt C# function. We will learn ascending order and descending order array with a simple example.
 
Sort Array In C# Without Using Inbuilt Function
 
Example 1 - Sort an array in ascending order without using inbuilt C# function
 
We will create a simple one integer array having values 2,9,4,3,5,1,7 in the array as described in the following example. We will take two for loops; first, a for loop for checking the first position of an array and iterating the length of the array.  The second loop starts with the i+1 position and iterates the length of the array.
  1. using System;  
  2.   
  3. namespace SortArrayExample  
  4. {  
  5.     class Program  
  6.     {  
  7.         static void Main(string[] args)  
  8.         {  
  9.             int[] intArray = new int[] {2,9,4,3,5,1,7 };  
  10.             int temp = 0;  
  11.   
  12.             for (int i = 0; i <= intArray.Length-1; i++)  
  13.             {  
  14.                 for (int j = i+1; j < intArray.Length; j++)  
  15.                 {  
  16.                     if (intArray[i] > intArray[j])  
  17.                     {  
  18.                         temp = intArray[i];  
  19.                         intArray[i] = intArray[j];  
  20.                         intArray[j] = temp;  
  21.                     }  
  22.                 }  
  23.             }  
  24.             Console.WriteLine("Array sort in asscending order");  
  25.             foreach (var item in intArray)  
  26.             {  
  27.                 Console.WriteLine(item);  
  28.             }  
  29.             Console.ReadLine();  
  30.         }  
  31.     }  
  32. }  
Output
 
Sort Array In C# Without Using Inbuilt Function
 
Example 2
 
Sort an array in descending order without using inbuilt C# function. 
  1. using System;  
  2.   
  3. namespace SortArrayExample  
  4. {  
  5.     class Program  
  6.     {  
  7.         static void Main(string[] args)  
  8.         {  
  9.             int[] intArray = new int[] {2,9,4,3,5,1,7 };  
  10.             int temp = 0;  
  11.   
  12.             for (int i = 0; i <= intArray.Length-1; i++)  
  13.             {  
  14.                 for (int j = i+1; j < intArray.Length; j++)  
  15.                 {  
  16.                     if (intArray[i] < intArray[j])  
  17.                     {  
  18.                         temp = intArray[i];  
  19.                         intArray[i] = intArray[j];  
  20.                         intArray[j] = temp;  
  21.                     }  
  22.                 }  
  23.             }  
  24.             Console.WriteLine("Array sort in descending order");  
  25.             foreach (var item in intArray)  
  26.             {  
  27.                 Console.WriteLine(item);  
  28.             }  
  29.             Console.ReadLine();  
  30.         }  
  31.     }  
  32. }  
Output
 
Sort Array In C# Without Using Inbuilt Function
 
I hope you understand how to sort an array without using the inbuilt function.