true if all elements present in toMatch are also present in elements
Arguments: toMatch is the array to perform the check on elements is the array containing the elements that will be compared against
assert("Hello".matchElements("aeloH") == true); assert("abcd".matchElements("cda") == false);
Checks if all elements present in an array are also present in another array
Index, and the number of times the element is present in each array doesn't matter