"content":"<p>You are given a character array <code>keys</code> containing <strong>unique</strong> characters and a string array <code>values</code> containing strings of length 2. You are also given another string array <code>dictionary</code> that contains all permitted original strings after decryption. You should implement a data structure that can encrypt or decrypt a <strong>0-indexed</strong> string.</p>\n\n<p>A string is <strong>encrypted</strong> with the following process:</p>\n\n<ol>\n\t<li>For each character <code>c</code> in the string, we find the index <code>i</code> satisfying <code>keys[i] == c</code> in <code>keys</code>.</li>\n\t<li>Replace <code>c</code> with <code>values[i]</code> in the string.</li>\n</ol>\n\n<p>Note that in case a character of the string is <strong>not present</strong> in <code>keys</code>, the encryption process cannot be carried out, and an empty string <code>""</code> is returned.</p>\n\n<p>A string is <strong>decrypted</strong> with the following process:</p>\n\n<ol>\n\t<li>For each substring <code>s</code> of length 2 occurring at an even index in the string, we find an <code>i</code> such that <code>values[i] == s</code>. If there are multiple valid <code>i</code>, we choose <strong>any</strong> one of them. This means a string could have multiple possible strings it can decrypt to.</li>\n\t<li>Replace <code>s</code> with <code>keys[i]</code> in the string.</li>\n</ol>\n\n<p>Implement the <code>Encrypter</code> class:</p>\n\n<ul>\n\t<li><code>Encrypter(char[] keys, String[] values, String[] dictionary)</code> Initializes the <code>Encrypter</code> class with <code>keys, values</code>, and <code>dictionary</code>.</li>\n\t<li><code>String encrypt(String word1)</code> Encrypts <code>word1</code> with the encryption process described above and returns the encrypted string.</li>\n\t<li><code>int decrypt(String word2)</code> Returns the number of possible strings <code>word2</code> could decrypt to that also appear in <code>dictionary</code>.</li>\n</ul>\n\n<p> </p>\n<p><strong class=\"example\">Example1:</strong></p>\n\n<pre>\n<strong>Input</strong>\n["Encrypter","encrypt","decrypt"]\n[[['a','b','c','d'],["ei","zf","ei","am"],["abcd","acbd","adbc","badc","dacb","cadb","cbda","abad"]],["abcd"],["eizfeiam"]]\n<strong>Output</strong>\n[null,"eizfeiam",2]\n\n<strong>Explanation</strong>\nEncrypterencrypter=newEncrypter([['a','b','c','d'],["ei","zf","ei","am"],["abcd","acbd","adbc","badc","dacb","cadb","cbda","abad"]);\nencrypter.encrypt("abcd");// return "eizfeiam". \n // 'a' maps to "ei", 'b' maps to "zf", 'c' maps to "ei", and 'd' maps to "am".\nencrypter.decrypt("eizfeiam"); // return 2. \n // "ei" can map to 'a' or 'c', "zf" maps to 'b', and "am" maps to 'd'. \n // Thus, the possible strings after decryption are "abad", "cbad", "abcd", and "cbcd". \n // 2 of those strings, "abad" and "abcd", appear in dictionary, so the answer is 2.\n</pre>\n\n<p> </p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>1 <= keys.length == values.length <= 26</code></li>\n\t<li><code>values[i].length == 2</code></li>\n\t<li><code>1 <= dictionary.length <= 100</code></li>\n\t<li><code>1 <= dictionary[i].length <= 100</code></li>\n\t<li>All <code>keys[i]</code> and <code>dictionary[i]</code> are <strong>uni
"code":"class Encrypter {\npublic:\n Encrypter(vector<char>& keys, vector<string>& values, vector<string>& dictionary) {\n \n }\n \n string encrypt(string word1) {\n \n }\n \n int decrypt(string word2) {\n \n }\n};\n\n/**\n * Your Encrypter object will be instantiated and called as such:\n * Encrypter* obj = new Encrypter(keys, values, dictionary);\n * string param_1 = obj->encrypt(word1);\n * int param_2 = obj->decrypt(word2);\n */",
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"lang":"Java",
"langSlug":"java",
"code":"class Encrypter {\n\n public Encrypter(char[] keys, String[] values, String[] dictionary) {\n \n }\n \n public String encrypt(String word1) {\n \n }\n \n public int decrypt(String word2) {\n \n }\n}\n\n/**\n * Your Encrypter object will be instantiated and called as such:\n * Encrypter obj = new Encrypter(keys, values, dictionary);\n * String param_1 = obj.encrypt(word1);\n * int param_2 = obj.decrypt(word2);\n */",
"code":"public class Encrypter {\n\n public Encrypter(char[] keys, string[] values, string[] dictionary) {\n \n }\n \n public string Encrypt(string word1) {\n \n }\n \n public int Decrypt(string word2) {\n \n }\n}\n\n/**\n * Your Encrypter object will be instantiated and called as such:\n * Encrypter obj = new Encrypter(keys, values, dictionary);\n * string param_1 = obj.Encrypt(word1);\n * int param_2 = obj.Decrypt(word2);\n */",
"__typename":"CodeSnippetNode"
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{
"lang":"JavaScript",
"langSlug":"javascript",
"code":"/**\n * @param {character[]} keys\n * @param {string[]} values\n * @param {string[]} dictionary\n */\nvar Encrypter = function(keys, values, dictionary) {\n \n};\n\n/** \n * @param {string} word1\n * @return {string}\n */\nEncrypter.prototype.encrypt = function(word1) {\n \n};\n\n/** \n * @param {string} word2\n * @return {number}\n */\nEncrypter.prototype.decrypt = function(word2) {\n \n};\n\n/** \n * Your Encrypter object will be instantiated and called as such:\n * var obj = new Encrypter(keys, values, dictionary)\n * var param_1 = obj.encrypt(word1)\n * var param_2 = obj.decrypt(word2)\n */",
"code":"class Encrypter {\n constructor(keys: string[], values: string[], dictionary: string[]) {\n \n }\n\n encrypt(word1: string): string {\n \n }\n\n decrypt(word2: string): number {\n \n }\n}\n\n/**\n * Your Encrypter object will be instantiated and called as such:\n * var obj = new Encrypter(keys, values, dictionary)\n * var param_1 = obj.encrypt(word1)\n * var param_2 = obj.decrypt(word2)\n */",
"__typename":"CodeSnippetNode"
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"lang":"PHP",
"langSlug":"php",
"code":"class Encrypter {\n /**\n * @param String[] $keys\n * @param String[] $values\n * @param String[] $dictionary\n */\n function __construct($keys, $values, $dictionary) {\n \n }\n \n /**\n * @param String $word1\n * @return String\n */\n function encrypt($word1) {\n \n }\n \n /**\n * @param String $word2\n * @return Integer\n */\n function decrypt($word2) {\n \n }\n}\n\n/**\n * Your Encrypter object will be instantiated and called as such:\n * $obj = Encrypter($keys, $values, $dictionary);\n * $ret_1 = $obj->encrypt($word1);\n * $ret_2 = $obj->decrypt($word2);\n */",
"code":"class Encrypter(keys: CharArray, values: Array<String>, dictionary: Array<String>) {\n\n fun encrypt(word1: String): String {\n \n }\n\n fun decrypt(word2: String): Int {\n \n }\n\n}\n\n/**\n * Your Encrypter object will be instantiated and called as such:\n * var obj = Encrypter(keys, values, dictionary)\n * var param_1 = obj.encrypt(word1)\n * var param_2 = obj.decrypt(word2)\n */",
"code":"class Encrypter(_keys: Array[Char], _values: Array[String], _dictionary: Array[String]) {\n\n def encrypt(word1: String): String = {\n \n }\n\n def decrypt(word2: String): Int = {\n \n }\n\n}\n\n/**\n * Your Encrypter object will be instantiated and called as such:\n * var obj = new Encrypter(keys, values, dictionary)\n * var param_1 = obj.encrypt(word1)\n * var param_2 = obj.decrypt(word2)\n */",
"code":"-spec encrypter_init_(Keys :: [char()], Values :: [unicode:unicode_binary()], Dictionary :: [unicode:unicode_binary()]) -> any().\nencrypter_init_(Keys, Values, Dictionary) ->\n .\n\n-spec encrypter_encrypt(Word1 :: unicode:unicode_binary()) -> unicode:unicode_binary().\nencrypter_encrypt(Word1) ->\n .\n\n-spec encrypter_decrypt(Word2 :: unicode:unicode_binary()) -> integer().\nencrypter_decrypt(Word2) ->\n .\n\n\n%% Your functions will be called as such:\n%% encrypter_init_(Keys, Values, Dictionary),\n%% Param_1 = encrypter_encrypt(Word1),\n%% Param_2 = encrypter_decrypt(Word2),\n\n%% encrypter_init_ will be called before every test case, in which you can do some necessary initializations.",
"code":"defmodule Encrypter do\n @spec init_(keys :: [char], values :: [String.t], dictionary :: [String.t]) :: any\n def init_(keys, values, dictionary) do\n \n end\n\n @spec encrypt(word1 :: String.t) :: String.t\n def encrypt(word1) do\n \n end\n\n @spec decrypt(word2 :: String.t) :: integer\n def decrypt(word2) do\n \n end\nend\n\n# Your functions will be called as such:\n# Encrypter.init_(keys, values, dictionary)\n# param_1 = Encrypter.encrypt(word1)\n# param_2 = Encrypter.decrypt(word2)\n\n# Encrypter.init_ will be called before every test case, in which you can do some necessary initializations.",
"envInfo":"{\"cpp\": [\"C++\", \"<p>Compiled with <code> clang 11 </code> using the latest C++ 20 standard.</p>\\r\\n\\r\\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\\\"https://github.com/google/sanitizers/wiki/AddressSanitizer\\\" target=\\\"_blank\\\">AddressSanitizer</a> is also enabled to help detect out-of-bounds and use-after-free bugs.</p>\\r\\n\\r\\n<p>Most standard library headers are already included automatically for your convenience.</p>\"], \"java\": [\"Java\", \"<p><code>OpenJDK 17</code>. Java 8 features such as lambda expressions and stream API can be used. </p>\\r\\n\\r\\n<p>Most standard library headers are already included automatically for your convenience.</p>\\r\\n<p>Includes <code>Pair</code> class from https://docs.oracle.com/javase/8/javafx/api/javafx/util/Pair.html.</p>\"], \"python\": [\"Python\", \"<p><code>Python 2.7.12</code>.</p>\\r\\n\\r\\n<p>Most libraries are already imported automatically for your convenience, such as <a href=\\\"https://docs.python.org/2/library/array.html\\\" target=\\\"_blank\\\">array</a>, <a href=\\\"https://docs.python.org/2/library/bisect.html\\\" target=\\\"_blank\\\">bisect</a>, <a href=\\\"https://docs.python.org/2/library/collections.html\\\" target=\\\"_blank\\\">collections</a>. If you need more libraries, you can import it yourself.</p>\\r\\n\\r\\n<p>For Map/TreeMap data structure, you may use <a href=\\\"http://www.grantjenks.com/docs/sortedcontainers/\\\" target=\\\"_blank\\\">sortedcontainers</a> library.</p>\\r\\n\\r\\n<p>Note that Python 2.7 <a href=\\\"https://www.python.org/dev/peps/pep-0373/\\\" target=\\\"_blank\\\">will not be maintained past 2020</a>. For the latest Python, please choose Python3 instead.</p>\"], \"c\": [\"C\", \"<p>Compiled with <code>gcc 8.2</code> using the gnu11 standard.</p>\\r\\n\\r\\n<p>Your code is compiled with level one optimization (<code>-O1</code>). <a href=\\\"https://github.com/google/sanitizers/wiki/AddressSanitizer\\\" target=\\\"_blank\\\">AddressSanitizer</a> is also enabled to help detect out-of-bounds and use-after-free bugs.</p>\\r\\n\\r\\n<p>Most standard library headers are already included automatically for your convenience.</p>\\r\\n\\r\\n<p>For hash table operations, you may use <a href=\\\"https://troydhanson.github.io/uthash/\\\" target=\\\"_blank\\\">uthash</a>. \\\"uthash.h\\\" is included by default. Below are some examples:</p>\\r\\n\\r\\n<p><b>1. Adding an item to a hash.</b>\\r\\n<pre>\\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</pre>\\r\\n</p>\\r\\n\\r\\n<p><b>2. Looking up an item in a hash:</b>\\r\\n<pre>\\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</pre>\\r\\n</p>\\r\\n\\r\\n<p><b>3. Deleting an item in a hash:</b>\\r\\n<pre>\\r\\nvoid delete_user(struct hash_entry *user) {\\r\\n HASH_DEL(users, user); \\r\\n}\\r\\n</pre>\\r\\n</p>\"], \"csharp\": [\"C#\", \"<p><a href=\\\"https://learn.microsoft.com/en-us/dotnet/csharp/whats-new/csharp-10\\\" target=\\\"_blank\\\">C# 10 with .NET 6 runtime</a></p>\"], \"javascript\": [\"JavaScript\", \"<p><code>Node.js 16.13.2</code>.</p>\\r\\n\\r\\n<p>Your code is run with <code>--harmony</code> flag, enabling <a href=\\\"http://node.green/\\\" target=\\\"_blank\\\">new ES6 features</a>.</p>\\r\\n\\r\\n<p><a href=\\\"https://lodash.com\\\" target=\\\"_blank\\\">lodash.js</a> library is included by default.</p>\\r\\n\\r\\n<p>For Priority Queue / Queue data structures, you may use 5.3.0 version of <a href=\\\"https://github.com/datastructures-js/priority-queue/tree/fb4fdb984834421279aeb081df7af624d17c2a03\\\" target=\\\"_blank\\\">datastructures-js/priority-queue</a> and 4.2.1 version of <a href=\\\"https://githu
