How do I efficiently assign values to arrays and lists in C#?

C# Array Value Assignment

Unlike PHP, C# array value assignment requires a specific method. Here's how to populate a C# array:

First, declare the array:

<code class="language-csharp">int[] terms = new int[400];</code>

Then, use a for loop to assign values to each element:

<code class="language-csharp">for (int runs = 0; runs < 400; runs++) {
    terms[runs] = runs * 2; // Example: Assigning values
}</code>

A More Flexible Approach: Using Lists

C# offers a more dynamic alternative: Lists. Unlike arrays, lists don't require a predefined size:

<code class="language-csharp">List<int> termsList = new List<int>();</code>

Add values using the Add() method:

<code class="language-csharp">for (int runs = 0; runs < 400; runs++) {
    termsList.Add(runs * 2); // Example: Adding values
}</code>

To convert the list back to an array, use ToArray():

<code class="language-csharp">int[] terms = termsList.ToArray();</code>

Performance Comparison

Consider these performance factors:

• for loops on Lists are roughly twice as fast as foreach loops.
• Array iteration using for loops is approximately twice as fast as List iteration.
• A for loop on an array is about five times faster than a foreach loop on a List.

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