{ "data": { "question": { "questionId": "2406", "questionFrontendId": "2325", "boundTopicId": null, "title": "Decode the Message", "titleSlug": "decode-the-message", "content": "

You are given the strings key and message, which represent a cipher key and a secret message, respectively. The steps to decode message are as follows:

\n\n
    \n\t
  1. Use the first appearance of all 26 lowercase English letters in key as the order of the substitution table.
    2. \n\t
  2. Align the substitution table with the regular English alphabet.
    3. \n\t
  3. Each letter in message is then substituted using the table.
    4. \n\t
  4. Spaces ' ' are transformed to themselves.
    5. \n
\n\n\n\n

Return the decoded message.

\n\n

 

\n

Example 1:

\n\"\"\n
\nInput: key = "the quick brown fox jumps over the lazy dog", message = "vkbs bs t suepuv"\nOutput: "this is a secret"\nExplanation: The diagram above shows the substitution table.\nIt is obtained by taking the first appearance of each letter in "the quick brown fox jumps over the lazy dog".\n
\n\n

Example 2:

\n\"\"\n
\nInput: key = "eljuxhpwnyrdgtqkviszcfmabo", message = "zwx hnfx lqantp mnoeius ycgk vcnjrdb"\nOutput: "the five boxing wizards jump quickly"\nExplanation: The diagram above shows the substitution table.\nIt is obtained by taking the first appearance of each letter in "eljuxhpwnyrdgtqkviszcfmabo".\n
\n\n

 

\n

Constraints:

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string? string?)\n\n )", "__typename": "CodeSnippetNode" }, { "lang": "Erlang", "langSlug": "erlang", "code": "-spec decode_message(Key :: unicode:unicode_binary(), Message :: unicode:unicode_binary()) -> unicode:unicode_binary().\ndecode_message(Key, Message) ->\n .", "__typename": "CodeSnippetNode" }, { "lang": "Elixir", "langSlug": "elixir", "code": "defmodule Solution do\n @spec decode_message(key :: String.t, message :: String.t) :: String.t\n def decode_message(key, message) do\n\n end\nend", "__typename": "CodeSnippetNode" } ], "stats": "{\"totalAccepted\": \"22K\", \"totalSubmission\": \"26.4K\", \"totalAcceptedRaw\": 22030, \"totalSubmissionRaw\": 26401, \"acRate\": \"83.4%\"}", "hints": [ "Iterate through the characters in the key to construct a mapping to the English alphabet.", "Make sure to check that the current character is not already in the mapping (only the first appearance is considered).", "Map the characters in the message according to the constructed mapping." ], "solution": null, "status": null, "sampleTestCase": "\"the quick brown fox jumps over the lazy dog\"\n\"vkbs bs t suepuv\"", "metaData": "{\n \"name\": \"decodeMessage\",\n \"params\": [\n {\n \"name\": \"key\",\n \"type\": \"string\"\n },\n {\n \"type\": \"string\",\n \"name\": \"message\"\n }\n ],\n \"return\": {\n \"type\": \"string\"\n }\n}", "judgerAvailable": true, "judgeType": "large", "mysqlSchemas": [], "enableRunCode": true, "enableTestMode": false, "enableDebugger": true, "envInfo": "{\"cpp\": [\"C++\", \"

Compiled with clang 11 using the latest C++ 17 standard.

\\r\\n\\r\\n

Your code is compiled with level two optimization (-O2). AddressSanitizer is also enabled to help detect out-of-bounds and use-after-free bugs.

\\r\\n\\r\\n

Most standard library headers are already included automatically for your convenience.

\"], \"java\": [\"Java\", \"

OpenJDK 17 . Java 8 features such as lambda expressions and stream API can be used.

\\r\\n\\r\\n

Most standard library headers are already included automatically for your convenience.

\\r\\n

Includes Pair class from https://docs.oracle.com/javase/8/javafx/api/javafx/util/Pair.html.

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Python 2.7.12.

\\r\\n\\r\\n

Most libraries are already imported automatically for your convenience, such as array, bisect, collections. If you need more libraries, you can import it yourself.

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For Map/TreeMap data structure, you may use sortedcontainers library.

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Note that Python 2.7 will not be maintained past 2020. For the latest Python, please choose Python3 instead.

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Compiled with gcc 8.2 using the gnu11 standard.

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Your code is compiled with level one optimization (-O1). AddressSanitizer is also enabled to help detect out-of-bounds and use-after-free bugs.

\\r\\n\\r\\n

Most standard library headers are already included automatically for your convenience.

\\r\\n\\r\\n

For hash table operations, you may use uthash. \\\"uthash.h\\\" is included by default. Below are some examples:

\\r\\n\\r\\n

1. Adding an item to a hash.\\r\\n

\\r\\nstruct hash_entry {\\r\\n    int id;            /* we'll use this field as the key */\\r\\n    char name[10];\\r\\n    UT_hash_handle hh; /* makes this structure hashable */\\r\\n};\\r\\n\\r\\nstruct hash_entry *users = NULL;\\r\\n\\r\\nvoid add_user(struct hash_entry *s) {\\r\\n    HASH_ADD_INT(users, id, s);\\r\\n}\\r\\n
\\r\\n

\\r\\n\\r\\n

2. Looking up an item in a hash:\\r\\n

\\r\\nstruct hash_entry *find_user(int user_id) {\\r\\n    struct hash_entry *s;\\r\\n    HASH_FIND_INT(users, &user_id, s);\\r\\n    return s;\\r\\n}\\r\\n
\\r\\n

\\r\\n\\r\\n

3. Deleting an item in a hash:\\r\\n

\\r\\nvoid delete_user(struct hash_entry *user) {\\r\\n    HASH_DEL(users, user);  \\r\\n}\\r\\n
\\r\\n

\"], \"csharp\": [\"C#\", \"

C# 10 with .NET 6 runtime

\"], \"javascript\": [\"JavaScript\", \"

Node.js 16.13.2.

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Your code is run with --harmony flag, enabling new ES6 features.

\\r\\n\\r\\n

lodash.js library is included by default.

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For Priority Queue / Queue data structures, you may use datastructures-js/priority-queue and datastructures-js/queue.

\"], \"ruby\": [\"Ruby\", \"

Ruby 3.1

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Some common data structure implementations are provided in the Algorithms module: https://www.rubydoc.info/github/kanwei/algorithms/Algorithms

\"], \"swift\": [\"Swift\", \"

Swift 5.5.2.

\"], \"golang\": [\"Go\", \"

Go 1.17.6.

\\r\\n\\r\\n

Support https://godoc.org/github.com/emirpasic/gods library.

\"], \"python3\": [\"Python3\", \"

Python 3.10.

\\r\\n\\r\\n

Most libraries are already imported automatically for your convenience, such as array, bisect, collections. If you need more libraries, you can import it yourself.

\\r\\n\\r\\n

For Map/TreeMap data structure, you may use sortedcontainers library.

\"], \"scala\": [\"Scala\", \"

Scala 2.13.7.

\"], \"kotlin\": [\"Kotlin\", \"

Kotlin 1.3.10.

\"], \"rust\": [\"Rust\", \"

Rust 1.58.1

\\r\\n\\r\\n

Supports rand v0.6\\u00a0from crates.io

\"], \"php\": [\"PHP\", \"

PHP 8.1.

\\r\\n

With bcmath module

\"], \"typescript\": [\"Typescript\", \"

TypeScript 4.5.4, Node.js 16.13.2.

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Your code is run with --harmony flag, enabling new ES2020 features.

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lodash.js library is included by default.

\"], \"racket\": [\"Racket\", \"

Run with Racket 8.3.

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