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【leetcode】Decode Ways(medium)

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

题目如下: 解题思路:这个题目的本质是一个爬楼梯问题,在爬楼梯问题中,每次可以选择走一步或者两步.而本题也是一样的,解码的时候选择解码一个字符或者两个字符,但是加大了一点点难度,要考虑这些情况.1,Z对应的编码是26,所以超过26的连续两个字符不能合并解码,27只能解析成2和7:2,0字符只能和前面的字符合并解码,不能单独作为一个字符解码. 代码如下: /** * @param {string} s * @return {number} */ var numDecodings = functio…

【Leetcode】【Medium】Decode Ways

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】动态规划（下篇共39题）

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【LeetCode】91. Decode Ways 解题报告（Python）

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【LeetCode】分治法 divide and conquer （共17题）

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【LeetCode】Longest Word in Dictionary through Deleting 解题报告

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