﻿ C# - From a list of integers, multiply each element by 3

# C#: Create a new list from a given list of integers where each element is multiplied by 3

## C# Sharp Basic Algorithm: Exercise-141 with Solution

Write a C# Sharp program to create a list from a given list of integers where each element is multiplied by 3.

Visual Presentation:

Sample Solution:

C# Sharp Code:

``````using System; // Importing the System namespace for basic functionality
using System.Collections.Generic; // Importing the namespace for working with collections
using System.Linq; // Importing the namespace for LINQ operations

namespace exercises // Defining a namespace called 'exercises'
{
class Program // Defining a class named 'Program'
{
static void Main(string[] args) // The entry point of the program
{
// Creating a List of integers and assigning the result of 'test' method
List<int> mylist = test(new List<int>(new int[] { 1, 2, 3 , 4 }));

// Displaying the elements of 'mylist' in the console
foreach (var i in mylist)
{
Console.Write(i.ToString() + " "); // Output each element followed by a space
}
}

// Method that takes a List of integers and returns a new List with each element multiplied by 3
public static List<int> test(List<int> nums)
{
// Using LINQ to multiply each element of 'nums' by 3 and store it in 'doubled'
IEnumerable<int> doubled = nums.Select(x => x *= 3);

// Converting the IEnumerable 'doubled' to a new List and returning it
return doubled.ToList<int>();
}
}
}
```
```

Sample Output:

`3 6 9 12`

Flowchart:

C# Sharp Code Editor:

Improve this sample solution and post your code through Disqus

What is the difficulty level of this exercise?

Test your Programming skills with w3resource's quiz.

﻿