An icon font numbers its icons from 1 to 26. A sharing link stores a list of icons by writing their numbers one after another with nothing in between, so the list (1, 12) and the list (11, 2) both become "112".
Write countIconReadings(code) that returns how many different icon lists could have produced code. Each piece must be a number from 1 to 26 written without a leading zero, so "06" is not a valid piece and neither is "0". If no reading exists, return 0.
The count can be very large, so return it modulo 1000000007.
Input: code = "15" Output: 2
Icons (1, 5) or icon (15).
Input: code = "125" Output: 3
(1, 2, 5), (12, 5), or (1, 25).
1 <= code.length <= 1000code contains only the digits 0 to 9.Run tries your code on the examples. Submit runs every test, including hidden edge cases, and solves the problem when they all pass.
Ctrl + Enter runs, Ctrl + Shift + Enter submits (⌘ on a Mac).
I'm here to help with #485 Count Icon Code Readings. I give hints, never the solution, so you get to solve it yourself. Ask for a hint, select code to ask about it, or press Ask Tuto why on a failing test.
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