Compare two .NET Array objects

Question

I am trying to compare two .NET arrays. Here is an obvious implementation for comparing arrays of bytes:

bool AreEqual(byte[] a, byte[] b){
    if(a.Length != b.Length)
        return false;
    for(int i = 0; i < a.Length; i++)
        if(a[i] != b[i])
            return false;

    return true;
}

A more refined approach can be seen here (via Google).

1. What is the simplest way (using less code but readable) to compare two .NET arrays?
2. What is the most efficient way compare two .NET arrays?

Answer 1

You could use SequenceEqual:

string[] a = { "1", "2", "3" };
string[] b = { "1", "2", "3" };

bool areEqual = a.SequenceEqual(b); // true


string[] c = { "1", "2", "5" };
areEqual = a.SequenceEqual(c);      // false