You are given the stringskeyandmessage, which represent a cipher key and a secret message, respectively. The steps to decodemessageare as follows: Use the first appearance of all 26 lowercase English letters in
需要存储 message 解密后消息的全部 O(n) 个字母 代码(Python3) class Solution: def decodeMessage(self, key: str, message: str) -> str: # 初始化对照表, '\0' 表示还未找到解密后的字母 chs: List[str] = ['\0'] * 26 # 初始化下一个加密字母对应的解密后的字母 origin: int = ord('a...
四、代码实现 classSolution{publicStringdecodeMessage(String key,String message){intv=1, len = message.length();// v等于1，对应字符‘a’char[] result =newchar[len];int[] dic =newint[26];for(char item : key.toCharArray())// 构造密码字典映射if(item !=' '&& dic[item -'a']==) di...
[LeetCode] 91. Decode Ways 解码方法 A message containing letters fromA-Zis being encoded to numbers using the following mapping: 'A' -> 1 'B' -> 2 ... 'Z' -> 26 Given a non-empty string containing only digits, determine the total number of ways to decode it. Example 1: Input:...
class Solution { public: string decodeMessage(string key, string message) { vector<char> dict(26, 0); int j = 0; for (int i = 0; i < key.size(); i++) { if (islower(key[i])) { if (dict[key[i] - 'a'] > 0) continue; dict[key[i] - 'a'] = j + 'a'; j++; ...
Given the encoded message containing digits and the character ‘*’, return the total number of ways to decode it. Also, since the answer may be very large, you should return the output mod 109 + 7. Example 1: Input: “*” Output: 9 ...
2325 Decode the Message C++ Python O(n + m) O(1) Easy String, Hash Table 2341 Maximum Number of Pairs in Array C++ Python O(n) O(r) Easy Freq Table 2342 Max Sum of a Pair With Equal Sum of Digits C++ Python O(nlogr) O(n) Medium Hash Table, Greedy 2347 Best Poker Hand C++...
394 Decode String 38.60% Medium 393 UTF-8 Validation 33.00% Medium 392 Is Subsequence 44.10% Medium 391 Perfect Rectangle 13.30% Hard 390 Elimination Game 12.50% Medium 389 Find the Difference 49.90% Easy 388 Longest Absolute File Path 28.30% Medium 387 First Unique Character in a String 43.10...
Each time you can either climb 1 or 2 steps. In how many distinct ways can you climb to the top? Note: Given n will be a positive integer. Example 1: Input: 2 Output: 2 Explanation: There are two ways to climb to the top. ...
decode-string decode-the-message decode-ways decode-xored-array decompress-run-length-encoded-list deep-dark-fraction deepest-leaves-sum defanging-an-ip-address defuse-the-bomb delete-characters-to-make-fancy-string delete-middle-node-lcci delete-node-in-a-bst delete-node-in-...