Concatenate Two Arrays

Adventure Scenario

Given two arrays array1 and array2, return a new array containing all the elements from both arrays, with the elements of array1 followed by those of array2.

Examples

concatenateArrays([1, 2, 3], [4, 5, 6])
// [1, 2, 3, 4, 5, 6]

concatenateArrays([7, 8, 9], [])
// [7, 8, 9]
concatenateArrays([], [10, 11, 12])
// [10, 11, 12]
concatenateArrays([], [])
// []