{ "data": { "question": { "questionId": "2184", "questionFrontendId": "2060", "boundTopicId": null, "title": "Check if an Original String Exists Given Two Encoded Strings", "titleSlug": "check-if-an-original-string-exists-given-two-encoded-strings", "content": "

An original string, consisting of lowercase English letters, can be encoded by the following steps:

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For example, one way to encode an original string "abcdefghijklmnop" might be:

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Given two encoded strings s1 and s2, consisting of lowercase English letters and digits 1-9 (inclusive), return true if there exists an original string that could be encoded as both s1 and s2. Otherwise, return false.

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Note: The test cases are generated such that the number of consecutive digits in s1 and s2 does not exceed 3.

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Example 1:

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\nInput: s1 = "internationalization", s2 = "i18n"\nOutput: true\nExplanation: It is possible that "internationalization" was the original string.\n- "internationalization" \n  -> Split:       ["internationalization"]\n  -> Do not replace any element\n  -> Concatenate:  "internationalization", which is s1.\n- "internationalization"\n  -> Split:       ["i", "nternationalizatio", "n"]\n  -> Replace:     ["i", "18",                 "n"]\n  -> Concatenate:  "i18n", which is s2\n
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Example 2:

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\nInput: s1 = "l123e", s2 = "44"\nOutput: true\nExplanation: It is possible that "leetcode" was the original string.\n- "leetcode" \n  -> Split:      ["l", "e", "et", "cod", "e"]\n  -> Replace:    ["l", "1", "2",  "3",   "e"]\n  -> Concatenate: "l123e", which is s1.\n- "leetcode" \n  -> Split:      ["leet", "code"]\n  -> Replace:    ["4",    "4"]\n  -> Concatenate: "44", which is s2.\n
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Example 3:

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\nInput: s1 = "a5b", s2 = "c5b"\nOutput: false\nExplanation: It is impossible.\n- The original string encoded as s1 must start with the letter 'a'.\n- The original string encoded as s2 must start with the letter 'c'.\n
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Constraints:

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Compiled with clang 11 using the latest C++ 20 standard.

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

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

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

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

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

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Python 2.7.12.

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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.

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

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

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

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

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

C# 10 with .NET 6 runtime

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Node.js 16.13.2.

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

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lodash.js library is included by default.

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For Priority Queue / Queue data structures, you may use 5.3.0 version of datastructures-js/priority-queue and 4.2.1 version of datastructures-js/queue.

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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

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Swift 5.5.2.

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Go 1.21

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Support https://godoc.org/github.com/emirpasic/gods@v1.18.1 library.

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Python 3.10.

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

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Scala 2.13.7.

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Kotlin 1.9.0.

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Rust 1.58.1

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PHP 8.1.

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With bcmath module

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TypeScript 5.1.6, Node.js 16.13.2.

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Dart 2.17.3

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Your code will be run directly without compiling

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