Here is a reference when solving paiza’s problem
Convert alphabet to hexadecimal number (1 to 26)
S=”abcdefghijklmnopqrstuvwxyz” S.index(x)+1 The character string up to the 26th is made with S, and it is converted into a number depending on the number of the actual alphabet. (There seems to be a better way…)
x = [1,2,3,4,5] x.length (=5) (x.length -1) (=4) You can use it with one short length.