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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"data": {
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"question": {
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"questionId": "3223",
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"questionFrontendId": "2953",
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"boundTopicId": null,
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"title": "Count Complete Substrings",
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"content": "<p>You are given a string <code>word</code> and an integer <code>k</code>.</p>\n\n<p>A substring <code>s</code> of <code>word</code> is <strong>complete</strong> if:</p>\n\n<ul>\n\t<li>Each character in <code>s</code> occurs <strong>exactly</strong> <code>k</code> times.</li>\n\t<li>The difference between two adjacent characters is <strong>at most</strong> <code>2</code>. That is, for any two adjacent characters <code>c1</code> and <code>c2</code> in <code>s</code>, the absolute difference in their positions in the alphabet is <strong>at most</strong> <code>2</code>.</li>\n</ul>\n\n<p>Return <em>the number of <strong>complete </strong>substrings of</em> <code>word</code>.</p>\n\n<p>A <strong>substring</strong> is a <strong>non-empty</strong> contiguous sequence of characters in a string.</p>\n\n<p> </p>\n<p><strong class=\"example\">Example 1:</strong></p>\n\n<pre>\n<strong>Input:</strong> word = "igigee", k = 2\n<strong>Output:</strong> 3\n<strong>Explanation:</strong> The complete substrings where each character appears exactly twice and the difference between adjacent characters is at most 2 are: <u><strong>igig</strong></u>ee, igig<u><strong>ee</strong></u>, <u><strong>igigee</strong></u>.\n</pre>\n\n<p><strong class=\"example\">Example 2:</strong></p>\n\n<pre>\n<strong>Input:</strong> word = "aaabbbccc", k = 3\n<strong>Output:</strong> 6\n<strong>Explanation:</strong> The complete substrings where each character appears exactly three times and the difference between adjacent characters is at most 2 are: <strong><u>aaa</u></strong>bbbccc, aaa<u><strong>bbb</strong></u>ccc, aaabbb<u><strong>ccc</strong></u>, <strong><u>aaabbb</u></strong>ccc, aaa<u><strong>bbbccc</strong></u>, <u><strong>aaabbbccc</strong></u>.\n</pre>\n\n<p> </p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>1 <= word.length <= 10<sup>5</sup></code></li>\n\t<li><code>word</code> consists only of lowercase English letters.</li>\n\t<li><code>1 <= k <= word.length</code></li>\n</ul>\n",
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"translatedTitle": null,
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"difficulty": "Hard",
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"likes": 118,
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"similarQuestions": "[{\"title\": \"Number of Substrings Containing All Three Characters\", \"titleSlug\": \"number-of-substrings-containing-all-three-characters\", \"difficulty\": \"Medium\", \"translatedTitle\": null}, {\"title\": \"Count Substrings Without Repeating Character\", \"titleSlug\": \"count-substrings-without-repeating-character\", \"difficulty\": \"Medium\", \"translatedTitle\": null}]",
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"exampleTestcases": "\"igigee\"\n2\n\"aaabbbccc\"\n3",
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"categoryTitle": "Algorithms",
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"name": "Hash Table",
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"name": "Sliding Window",
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"code": "# @param {String} word\n# @param {Integer} k\n# @return {Integer}\ndef count_complete_substrings(word, k)\n \nend",
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"code": "object Solution {\n def countCompleteSubstrings(word: String, k: Int): Int = {\n \n }\n}",
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"langSlug": "rust",
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"code": "impl Solution {\n pub fn count_complete_substrings(word: String, k: i32) -> i32 {\n \n }\n}",
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"code": "(define/contract (count-complete-substrings word k)\n (-> string? exact-integer? exact-integer?)\n )",
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"lang": "Erlang",
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"langSlug": "erlang",
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"code": "-spec count_complete_substrings(Word :: unicode:unicode_binary(), K :: integer()) -> integer().\ncount_complete_substrings(Word, K) ->\n .",
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"code": "defmodule Solution do\n @spec count_complete_substrings(word :: String.t, k :: integer) :: integer\n def count_complete_substrings(word, k) do\n \n end\nend",
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"stats": "{\"totalAccepted\": \"3.7K\", \"totalSubmission\": \"16.5K\", \"totalAcceptedRaw\": 3737, \"totalSubmissionRaw\": 16530, \"acRate\": \"22.6%\"}",
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"hints": [
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"There are at most 26 different lengths of the complete substrings: <code>k *1, k * 2, … k * 26</code>.****",
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"For each length, we can use sliding window to count the frequency of each letter in the window.",
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"We still need to check for all characters in the window that <code>abs(word[i] - word[i - 1]) <= 2</code>. We do this by maintaining the values of <code>abs(word[i] - word[i - 1])</code> in the sliding window dynamically in an ordered multiset or priority queue, so that we know the maximum value at each iteration."
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],
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"solution": null,
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"status": null,
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"sampleTestCase": "\"igigee\"\n2",
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"metaData": "{\n \"name\": \"countCompleteSubstrings\",\n \"params\": [\n {\n \"name\": \"word\",\n \"type\": \"string\"\n },\n {\n \"type\": \"integer\",\n \"name\": \"k\"\n }\n ],\n \"return\": {\n \"type\": \"integer\"\n }\n}",
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"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>. 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