Digital Cypher assigns to each letter of the alphabet unique number. For example:
a b c d e f g h i j k l m
1 2 3 4 5 6 7 8 9 10 11 12 13
n o p q r s t u v w x y z
14 15 16 17 18 19 20 21 22 23 24 25 26
Instead of letters in encrypted word we write the corresponding number, eg. The word scout:
s c o u t
19 3 15 21 20
Then we add to each obtained digit consecutive digits from the key. For example. In case of key
equal to 1939
:
s c o u t
19 3 15 21 20
+ 1 9 3 9 1
---------------
20 12 18 30 21
m a s t e r p i e c e
13 1 19 20 5 18 16 9 5 3 5
+ 1 9 3 9 1 9 3 9 1 9 3
--------------------------------
14 10 22 29 6 27 19 18 6 12 8
Write a function that accepts str
string and key
number and returns an array of integers
representing encoded str
.
The str
input string consists of lowercase characters only.
The key
input number is a positive integer.
Encode("scout",1939); ==> [ 20, 12, 18, 30, 21]
Encode("masterpiece",1939); ==> [ 14, 10, 22, 29, 6, 27, 19, 18, 6, 12, 8]