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[LeetCode] Decode Ways II 解码方法之二

A message containing letters from A-Z is being encoded to numbers using the following mapping way: 'A' -> 1 'B' -> 2 ... 'Z' -> 26 Beyond that, now the encoded string can also contain the character '*', which can be treated as one of the numbers…

[LeetCode] 639. Decode Ways II 解码方法 II

A message containing letters from A-Z is being encoded to numbers using the following mapping way: 'A' -> 1 'B' -> 2 ... 'Z' -> 26 Beyond that, now the encoded string can also contain the character '*', which can be treated as one of the numbers…

LeetCode OJ：Decode Ways（解码方法）

A message containing letters from A-Z is being encoded to numbers using the following mapping: 'A' -> 1 'B' -> 2 ... 'Z' -> 26 Given an encoded message containing digits, determine the total number of ways to decode it. For example,Given encoded…

[LeetCode] Decode Ways 解码方法

A message containing letters from A-Z is being encoded to numbers using the following mapping: 'A' -> 1 'B' -> 2 ... 'Z' -> 26 Given an encoded message containing digits, determine the total number of ways to decode it. For example,Given encoded…

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A message containing letters from A-Z is being encoded to numbers using the following mapping: 'A' -> 1 'B' -> 2 ... 'Z' -> 26 Given an encoded message containing digits, determine the total number of ways to decode it. For example,Given encoded…

leetcode 639 Decode Ways II

首先回顾一下decode ways I 的做法:链接 分情况讨论 if s[i]=='*' 考虑s[i]单独decode,由于s[i]肯定不会为0,因此我们可以放心的dp+=dp1 再考虑s[i-1]和s[i]decode,如果s[i-1]为*,那么**的组合共有15种(11,12,13.....,21,22..26),注意不是9*9=81种,因为我们是s[i-1]和s[i]一起decode,如果是38这样是大于26的 如果s[i-1]不为*,枚举s[i],组合起来小于26即可 if s[i]!…

[LeetCode] Decode Ways [33]

题目 A message containing letters from A-Z is being encoded to numbers using the following mapping: 'A' -> 1 'B' -> 2 ... 'Z' -> 26 Given an encoded message containing digits, determine the total number of ways to decode it. For example, Given enco…

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Decode WaysA message containing letters from A-Z is being encoded to numbers using the following mapping: 'A' -> 1'B' -> 2...'Z' -> 26Given an encoded message containing digits, determine the total number of ways to decode it. For example,Given e…