Decrypt String from Alphabet to Integer Mapping (Leetcode 1309)

Published: 03 February 2020
on channel: Coding Interviews
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Given a string s formed by digits ('0' - '9') and '#' . We want to map s to English lowercase characters as follows:

Characters ('a' to 'i') are represented by ('1' to '9') respectively.
Characters ('j' to 'z') are represented by ('10#' to '26#') respectively.
Return the string formed after mapping.

It's guaranteed that a unique mapping will always exist.



Example 1:

Input: s = "10#11#12"
Output: "jkab"
Explanation: "j" - "10#" , "k" - "11#" , "a" - "1" , "b" - "2".
Example 2:

Input: s = "1326#"
Output: "acz"
Example 3:

Input: s = "25#"
Output: "y"
Example 4:

Input: s = "12345678910#11#12#13#14#15#16#17#18#19#20#21#22#23#24#25#26#"
Output: "abcdefghijklmnopqrstuvwxyz"


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