What is the intended correct calibration value for the following line?:
five3onelxjninenine45
Reading the instructions strictly the answer should be 35.
However, puzzle makers often try to be "clever" by creating intentionally poor instructions. Which makes me think they might want the answer to be 55.
First and last number, so loop through the characters, ask is it a letter or a number. Find the first and last number in the string and add the strings together and convert it to a number. So you find a 3,4,5 in the line so find the first in the result is 3 and 5 is the last so it becomes 35.