This function locates the index of a given serial number in a list of serial numbers.
locate_serialnumber_index(serial_numbers, serialnumber)The index of the serial number in the list, or the index of the closest match based on ASCII value difference.
A vector of serial numbers.
A single serial number to be located within the list.
The function first checks if the list of serial numbers is empty and
returns 1 if true. If the serial number is found in the list, it returns the
last index where the serial number appears. If the serial number is not
found, it calculates the ASCII value difference between the given serial
number and each element in the list using the string_diff function. If
all differences are larger than 256^3, it returns 1. Otherwise, it returns
the index of the element with the smallest ASCII value difference.