mirror of
https://gitee.com/coder-xiaomo/leetcode-problemset
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155 lines
15 KiB
JSON
155 lines
15 KiB
JSON
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"question": {
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"questionId": "1894",
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"questionFrontendId": "1768",
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"boundTopicId": null,
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"title": "Merge Strings Alternately",
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"titleSlug": "merge-strings-alternately",
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"content": "<p>You are given two strings <code>word1</code> and <code>word2</code>. Merge the strings by adding letters in alternating order, starting with <code>word1</code>. If a string is longer than the other, append the additional letters onto the end of the merged string.</p>\r\n\r\n<p>Return <em>the merged string.</em></p>\r\n\r\n<p> </p>\r\n<p><strong>Example 1:</strong></p>\r\n\r\n<pre>\r\n<strong>Input:</strong> word1 = "abc", word2 = "pqr"\r\n<strong>Output:</strong> "apbqcr"\r\n<strong>Explanation:</strong> The merged string will be merged as so:\r\nword1: a b c\r\nword2: p q r\r\nmerged: a p b q c r\r\n</pre>\r\n\r\n<p><strong>Example 2:</strong></p>\r\n\r\n<pre>\r\n<strong>Input:</strong> word1 = "ab", word2 = "pqrs"\r\n<strong>Output:</strong> "apbqrs"\r\n<strong>Explanation:</strong> Notice that as word2 is longer, "rs" is appended to the end.\r\nword1: a b \r\nword2: p q r s\r\nmerged: a p b q r s\r\n</pre>\r\n\r\n<p><strong>Example 3:</strong></p>\r\n\r\n<pre>\r\n<strong>Input:</strong> word1 = "abcd", word2 = "pq"\r\n<strong>Output:</strong> "apbqcd"\r\n<strong>Explanation:</strong> Notice that as word1 is longer, "cd" is appended to the end.\r\nword1: a b c d\r\nword2: p q \r\nmerged: a p b q c d\r\n</pre>\r\n\r\n<p> </p>\r\n<p><strong>Constraints:</strong></p>\r\n\r\n<ul>\r\n\t<li><code>1 <= word1.length, word2.length <= 100</code></li>\r\n\t<li><code>word1</code> and <code>word2</code> consist of lowercase English letters.</li>\r\n</ul>",
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"translatedTitle": null,
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"translatedContent": null,
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"isPaidOnly": false,
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"difficulty": "Easy",
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"likes": 519,
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"dislikes": 8,
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"isLiked": null,
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"similarQuestions": "[{\"title\": \"Zigzag Iterator\", \"titleSlug\": \"zigzag-iterator\", \"difficulty\": \"Medium\", \"translatedTitle\": null}]",
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"exampleTestcases": "\"abc\"\n\"pqr\"\n\"ab\"\n\"pqrs\"\n\"abcd\"\n\"pq\"",
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"categoryTitle": "Algorithms",
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"contributors": [],
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"topicTags": [
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{
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"name": "Two Pointers",
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"slug": "two-pointers",
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"translatedName": null,
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"__typename": "TopicTagNode"
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"name": "String",
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"slug": "string",
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"codeSnippets": [
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{
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"lang": "C++",
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"langSlug": "cpp",
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"code": "class Solution {\npublic:\n string mergeAlternately(string word1, string word2) {\n \n }\n};",
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"__typename": "CodeSnippetNode"
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"lang": "Java",
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"langSlug": "java",
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"code": "class Solution {\n public String mergeAlternately(String word1, String word2) {\n \n }\n}",
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"__typename": "CodeSnippetNode"
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"lang": "Python",
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"langSlug": "python",
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"code": "class Solution(object):\n def mergeAlternately(self, word1, word2):\n \"\"\"\n :type word1: str\n :type word2: str\n :rtype: str\n \"\"\"\n ",
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"lang": "Python3",
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"langSlug": "python3",
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"code": "class Solution:\n def mergeAlternately(self, word1: str, word2: str) -> str:\n ",
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"lang": "C",
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"langSlug": "c",
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"code": "\n\nchar * mergeAlternately(char * word1, char * word2){\n\n}",
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"lang": "C#",
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"langSlug": "csharp",
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"code": "public class Solution {\n public string MergeAlternately(string word1, string word2) {\n \n }\n}",
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"__typename": "CodeSnippetNode"
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"lang": "JavaScript",
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"langSlug": "javascript",
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"code": "/**\n * @param {string} word1\n * @param {string} word2\n * @return {string}\n */\nvar mergeAlternately = function(word1, word2) {\n \n};",
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"lang": "Ruby",
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"langSlug": "ruby",
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"code": "# @param {String} word1\n# @param {String} word2\n# @return {String}\ndef merge_alternately(word1, word2)\n \nend",
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"lang": "Swift",
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"langSlug": "swift",
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"code": "class Solution {\n func mergeAlternately(_ word1: String, _ word2: String) -> String {\n \n }\n}",
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"lang": "Go",
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"langSlug": "golang",
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"code": "func mergeAlternately(word1 string, word2 string) string {\n \n}",
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"lang": "Scala",
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"langSlug": "scala",
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"code": "object Solution {\n def mergeAlternately(word1: String, word2: String): String = {\n \n }\n}",
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"__typename": "CodeSnippetNode"
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{
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"lang": "Kotlin",
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"langSlug": "kotlin",
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"code": "class Solution {\n fun mergeAlternately(word1: String, word2: String): String {\n \n }\n}",
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"lang": "Rust",
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"langSlug": "rust",
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"code": "impl Solution {\n pub fn merge_alternately(word1: String, word2: String) -> String {\n \n }\n}",
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"lang": "PHP",
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"langSlug": "php",
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"code": "class Solution {\n\n /**\n * @param String $word1\n * @param String $word2\n * @return String\n */\n function mergeAlternately($word1, $word2) {\n \n }\n}",
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"lang": "TypeScript",
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"langSlug": "typescript",
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"code": "function mergeAlternately(word1: string, word2: string): string {\n\n};",
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"lang": "Racket",
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"langSlug": "racket",
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"code": "(define/contract (merge-alternately word1 word2)\n (-> string? string? string?)\n\n )",
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"hints": [
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"Use two pointers, one pointer for each string. Alternately choose the character from each pointer, and move the pointer upwards."
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],
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"solution": null,
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"sampleTestCase": "\"abc\"\n\"pqr\"",
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"metaData": "{\n \"name\": \"mergeAlternately\",\n \"params\": [\n {\n \"name\": \"word1\",\n \"type\": \"string\"\n },\n {\n \"type\": \"string\",\n \"name\": \"word2\"\n }\n ],\n \"return\": {\n \"type\": \"string\"\n }\n}",
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"judgeType": "large",
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"envInfo": "{\"cpp\": [\"C++\", \"<p>Compiled with <code> clang 11 </code> using the latest C++ 17 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 gnu99 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://docs.microsoft.com/en-us/dotnet/csharp/whats-new/csharp-9\\\" target=\\\"_blank\\\">C# 10 with .NET 6 runtime</a></p>\\r\\n\\r\\n<p>Your code is compiled with debug flag enabled (<code>/debug</code>).</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 <a href=\\\"https://github.com/datastructures-js/priority-queue\\\" target=\\\"_blank\\\">datastructures-js/priority-queue</a> and <a href=\\\"https:
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