Decode Ways - Top Down Dynamic Programming - Ways to Decode - DP
A message containing letters from A-Z can be encoded into numbers using the following mapping:
'A' ---"1"
'B' --- "2"
...
'Z' --- "26"
To decode an encoded message, all the digits must be grouped then mapped back into letters using the reverse of the mapping above (there may be multiple ways). For example, "11106" can be mapped into:
"AAJF" with the grouping (1 1 10 6)
"KJF" with the grouping (11 10 6)
Note that the grouping (1 11 06) is invalid because "06" cannot be mapped into 'F' since "6" is different from "06".
Given a string s containing only digits, return the number of ways to decode it.
The test cases are generated so that the answer fits in a 32-bit integer.
Practice on:
LeetCode: https://leetcode.com/problems/decode-...
InterviewBit: https://www.interviewbit.com/problems...
Смотрите видео Decode Ways - Top Down Dynamic Programming - Ways to Decode - DP онлайн без регистрации, длительностью часов минут секунд в хорошем качестве. Это видео добавил пользователь BarikZone 09 Август 2022, не забудьте поделиться им ссылкой с друзьями и знакомыми, на нашем сайте его посмотрели 165 раз и оно понравилось 3 людям.