Concatenation of Array

To solve this coding challenge, you need to create a new array that consists of the original array nums followed by a duplicate of itself. This is straightforward and involves concatenating the original array with a copy of itself. Here's a step-by-step guide and the corresponding pseudo code:

Step 1: Concatenation

You need to concatenate the original array nums with another instance of itself. There are various ways to do this depending on the programming language being used. In some languages, there might be a built-in function or method for array concatenation.

Step 2: Return the New Array

After concatenating, you will have a new array of length 2n, where n is the length of the original array. This new array is what the problem statement refers to as ans.

Pseudo Code:

                                        
Function getConcatenation(nums)
    // Create a new array 'ans' by concatenating 'nums' with itself
    ans = nums + nums

    // Return the new array
    Return ans
End Function
                                    

This pseudo code uses a simple operation + to represent the concatenation process, assuming the programming environment supports such an operation for arrays. The actual implementation might use a different method or function for concatenation, such as concat() in JavaScript, as shown in the provided solution.

The provided solution in JavaScript uses the .concat() method, which joins two or more arrays by returning a new array. In this case, nums.concat(nums) creates a new array by concatenating nums with itself, effectively doubling the array while preserving the order of elements.