mirror of
https://gitee.com/coder-xiaomo/leetcode-problemset
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181 lines
17 KiB
JSON
181 lines
17 KiB
JSON
{
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"question": {
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"questionId": "1353",
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"questionFrontendId": "2273",
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"boundTopicId": null,
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"title": "Find Resultant Array After Removing Anagrams",
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"titleSlug": "find-resultant-array-after-removing-anagrams",
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"content": "<p>You are given a <strong>0-indexed</strong> string array <code>words</code>, where <code>words[i]</code> consists of lowercase English letters.</p>\n\n<p>In one operation, select any index <code>i</code> such that <code>0 < i < words.length</code> and <code>words[i - 1]</code> and <code>words[i]</code> are <strong>anagrams</strong>, and <strong>delete</strong> <code>words[i]</code> from <code>words</code>. Keep performing this operation as long as you can select an index that satisfies the conditions.</p>\n\n<p>Return <code>words</code> <em>after performing all operations</em>. It can be shown that selecting the indices for each operation in <strong>any</strong> arbitrary order will lead to the same result.</p>\n\n<p>An <strong>Anagram</strong> is a word or phrase formed by rearranging the letters of a different word or phrase using all the original letters exactly once. For example, <code>"dacb"</code> is an anagram of <code>"abdc"</code>.</p>\n\n<p> </p>\n<p><strong>Example 1:</strong></p>\n\n<pre>\n<strong>Input:</strong> words = ["abba","baba","bbaa","cd","cd"]\n<strong>Output:</strong> ["abba","cd"]\n<strong>Explanation:</strong>\nOne of the ways we can obtain the resultant array is by using the following operations:\n- Since words[2] = "bbaa" and words[1] = "baba" are anagrams, we choose index 2 and delete words[2].\n Now words = ["abba","baba","cd","cd"].\n- Since words[1] = "baba" and words[0] = "abba" are anagrams, we choose index 1 and delete words[1].\n Now words = ["abba","cd","cd"].\n- Since words[2] = "cd" and words[1] = "cd" are anagrams, we choose index 2 and delete words[2].\n Now words = ["abba","cd"].\nWe can no longer perform any operations, so ["abba","cd"] is the final answer.</pre>\n\n<p><strong>Example 2:</strong></p>\n\n<pre>\n<strong>Input:</strong> words = ["a","b","c","d","e"]\n<strong>Output:</strong> ["a","b","c","d","e"]\n<strong>Explanation:</strong>\nNo two adjacent strings in words are anagrams of each other, so no operations are performed.</pre>\n\n<p> </p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>1 <= words.length <= 100</code></li>\n\t<li><code>1 <= words[i].length <= 10</code></li>\n\t<li><code>words[i]</code> consists of lowercase English letters.</li>\n</ul>\n",
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"translatedTitle": null,
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"difficulty": "Easy",
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"likes": 104,
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"exampleTestcases": "[\"abba\",\"baba\",\"bbaa\",\"cd\",\"cd\"]\n[\"a\",\"b\",\"c\",\"d\",\"e\"]",
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"categoryTitle": "Algorithms",
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"name": "Hash Table",
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"lang": "C++",
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"code": "class Solution {\npublic:\n vector<string> removeAnagrams(vector<string>& words) {\n \n }\n};",
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"lang": "Java",
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"code": "class Solution {\n public List<String> removeAnagrams(String[] words) {\n \n }\n}",
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"lang": "Python",
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"code": "class Solution(object):\n def removeAnagrams(self, words):\n \"\"\"\n :type words: List[str]\n :rtype: List[str]\n \"\"\"\n ",
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"code": "class Solution:\n def removeAnagrams(self, words: List[str]) -> List[str]:\n ",
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"code": "\n\n/**\n * Note: The returned array must be malloced, assume caller calls free().\n */\nchar ** removeAnagrams(char ** words, int wordsSize, int* returnSize){\n\n}",
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"code": "public class Solution {\n public IList<string> RemoveAnagrams(string[] words) {\n \n }\n}",
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"code": "/**\n * @param {string[]} words\n * @return {string[]}\n */\nvar removeAnagrams = function(words) {\n \n};",
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"code": "# @param {String[]} words\n# @return {String[]}\ndef remove_anagrams(words)\n \nend",
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"code": "class Solution {\n func removeAnagrams(_ words: [String]) -> [String] {\n \n }\n}",
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"lang": "Go",
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"code": "func removeAnagrams(words []string) []string {\n \n}",
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"lang": "Scala",
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"code": "object Solution {\n def removeAnagrams(words: Array[String]): List[String] = {\n \n }\n}",
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"lang": "Kotlin",
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"langSlug": "kotlin",
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"code": "class Solution {\n fun removeAnagrams(words: Array<String>): List<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 remove_anagrams(words: Vec<String>) -> Vec<String> {\n \n }\n}",
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"lang": "PHP",
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"code": "class Solution {\n\n /**\n * @param String[] $words\n * @return String[]\n */\n function removeAnagrams($words) {\n \n }\n}",
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"lang": "TypeScript",
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"code": "function removeAnagrams(words: string[]): string[] {\n\n};",
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"lang": "Racket",
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"code": "(define/contract (remove-anagrams words)\n (-> (listof string?) (listof string?))\n\n )",
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"lang": "Erlang",
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"langSlug": "erlang",
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"code": "-spec remove_anagrams(Words :: [unicode:unicode_binary()]) -> [unicode:unicode_binary()].\nremove_anagrams(Words) ->\n .",
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"lang": "Elixir",
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"langSlug": "elixir",
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"code": "defmodule Solution do\n @spec remove_anagrams(words :: [String.t]) :: [String.t]\n def remove_anagrams(words) do\n\n end\nend",
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"stats": "{\"totalAccepted\": \"17.6K\", \"totalSubmission\": \"31.9K\", \"totalAcceptedRaw\": 17618, \"totalSubmissionRaw\": 31872, \"acRate\": \"55.3%\"}",
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"hints": [
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"Instead of removing each repeating anagram, try to find all the strings in words which will not be present in the final answer.",
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"For every index i, find the largest index j < i such that words[j] will be present in the final answer.",
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"Check if words[i] and words[j] are anagrams. If they are, then it can be confirmed that words[i] will not be present in the final answer."
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],
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"solution": null,
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"status": null,
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"sampleTestCase": "[\"abba\",\"baba\",\"bbaa\",\"cd\",\"cd\"]",
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"metaData": "{\n \"name\": \"removeAnagrams\",\n \"params\": [\n {\n \"name\": \"words\",\n \"type\": \"string[]\"\n }\n ],\n \"return\": {\n \"type\": \"list<string>\"\n }\n}",
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