Phone interview with a recruiter, followed by a phone interview with one programming question.

The process was quick and fair. The team was super nice the whole time and didn't stall with the final answer.

If a=1, b=2, c=3, ..., z=26. Given a string of digits, find all possible alphabet codes that string can generate. Provide a count as well as print the resulting strings.

For example: Input: "1123". You need to generate all valid alphabet codes from this string.

Output List:

• aabc // a = 1, a = 1, b = 2, c = 3
• kbc // k = 11, b = 2, c = 3
• alc // a = 1, l = 12, c = 3
• aaw // a = 1, a = 1, w = 23
• kw // k = 11, w = 23