Summary of 3 ways to compare arrays of C#

This article will introduce various methods for comparing arrays in C# and list code examples to demonstrate and compare them. It mainly introduces three methods. I hope you can use them.

Method 1: Use the SequenceEqual() method

SequenceEqual is a method in C# that can be used to compare if two sequences have the same element and the order of elements in both sequences is the same. This method is defined in the namespace and can be used for any collection type inherited from the IEnumerable<T> interface.

Using the example, create two array elements, and then use the SequenceEqual method to compare, the code is as follows:

string[] array1 = { "Zhang Fei", "Guan Yu", "Liu Bei", "dotnet development job-hopping" };
string[] array2 = {"Zhang Fei", "Guan Yu", "Liu Bei", "dotnet development job-hopping" };
bool areEqual = (array2);
(areEqual); // result: True

This method compares two arrays, returns true if the same, otherwise false.

Method 2: Comparison using loops

This way, by looping out the elements of two element groups, and using if to compare the elements in the two arrays.

Use example, or an array of method 1, the code is as follows:

string[] array1 = { "Zhang Fei", "Guan Yu", "Liu Bei", "dotnet development job-hopping" };
string[] array2 = {"Zhang Fei", "Guan Yu", "Liu Bei", "dotnet development job-hopping" };
bool areEqual = true;
if ( == ) {
    for (int i = 0; i < ; i++) {
        if (array1[i] != array2[i]) {
            areEqual = false;
            break;
        }
    }
} else {
    areEqual = false;
}
(areEqual);// result: True

By comparison, if the same returns true, otherwise returns false.

Method 3: How to use

It is a class in C# that implements the IEqualityComparer<object> interface and provides a structure equal way to compare two objects. Structure equality means that the members of two objects are equal, not references equal. This comparison method is particularly useful when deep comparisons are required, such as when storing objects in dictionaries or lists, and of course, arrays can be compared.

Use example, or an array of method 1, the code is as follows:

string[] array1 = { "Zhang Fei", "Guan Yu", "Liu Bei", "dotnet development job-hopping" };
string[] array2 = {"Zhang Fei", "Guan Yu", "Liu Bei", "dotnet development job-hopping" };
bool areEqual = (array1,array2);
(areEqual); // resultTrue

In this example, we use StructuralComparisons' Equals() method. The StructuralEqualityComparer class compares the contents of two arrays. This method returns the same array.

Conclusion

This article describes three ways to compare whether arrays are the same in C#. Mastering these methods will help you write efficient and error-free code.

This is the end of this article about the three ways to compare arrays in C#. For more related contents of C# comparison arrays, please search for my previous articles or continue browsing the related articles below. I hope everyone will support me in the future!