mirror of
https://gitee.com/coder-xiaomo/leetcode-problemset
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180 lines
17 KiB
JSON
180 lines
17 KiB
JSON
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"questionId": "2547",
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"title": "Odd String Difference",
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"content": "<p>You are given an array of equal-length strings <code>words</code>. Assume that the length of each string is <code>n</code>.</p>\n\n<p>Each string <code>words[i]</code> can be converted into a <strong>difference integer array</strong> <code>difference[i]</code> of length <code>n - 1</code> where <code>difference[i][j] = words[i][j+1] - words[i][j]</code> where <code>0 <= j <= n - 2</code>. Note that the difference between two letters is the difference between their <strong>positions</strong> in the alphabet i.e. the position of <code>'a'</code> is <code>0</code>, <code>'b'</code> is <code>1</code>, and <code>'z'</code> is <code>25</code>.</p>\n\n<ul>\n\t<li>For example, for the string <code>"acb"</code>, the difference integer array is <code>[2 - 0, 1 - 2] = [2, -1]</code>.</li>\n</ul>\n\n<p>All the strings in words have the same difference integer array, <strong>except one</strong>. You should find that string.</p>\n\n<p>Return<em> the string in </em><code>words</code><em> that has different <strong>difference integer array</strong>.</em></p>\n\n<p> </p>\n<p><strong class=\"example\">Example 1:</strong></p>\n\n<pre>\n<strong>Input:</strong> words = ["adc","wzy","abc"]\n<strong>Output:</strong> "abc"\n<strong>Explanation:</strong> \n- The difference integer array of "adc" is [3 - 0, 2 - 3] = [3, -1].\n- The difference integer array of "wzy" is [25 - 22, 24 - 25]= [3, -1].\n- The difference integer array of "abc" is [1 - 0, 2 - 1] = [1, 1]. \nThe odd array out is [1, 1], so we return the corresponding string, "abc".\n</pre>\n\n<p><strong class=\"example\">Example 2:</strong></p>\n\n<pre>\n<strong>Input:</strong> words = ["aaa","bob","ccc","ddd"]\n<strong>Output:</strong> "bob"\n<strong>Explanation:</strong> All the integer arrays are [0, 0] except for "bob", which corresponds to [13, -13].\n</pre>\n\n<p> </p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>3 <= words.length <= 100</code></li>\n\t<li><code>n == words[i].length</code></li>\n\t<li><code>2 <= n <= 20</code></li>\n\t<li><code>words[i]</code> consists of lowercase English letters.</li>\n</ul>\n",
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"difficulty": "Easy",
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"exampleTestcases": "[\"adc\",\"wzy\",\"abc\"]\n[\"aaa\",\"bob\",\"ccc\",\"ddd\"]",
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"categoryTitle": "Algorithms",
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"lang": "C++",
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"code": "class Solution {\npublic:\n string oddString(vector<string>& words) {\n \n }\n};",
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"code": "class Solution {\n public String oddString(String[] words) {\n \n }\n}",
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"lang": "Python",
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"code": "class Solution(object):\n def oddString(self, words):\n \"\"\"\n :type words: List[str]\n :rtype: str\n \"\"\"\n ",
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"code": "# @param {String[]} words\n# @return {String}\ndef odd_string(words)\n \nend",
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"code": "impl Solution {\n pub fn odd_string(words: Vec<String>) -> String {\n \n }\n}",
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"code": "(define/contract (odd-string words)\n (-> (listof string?) string?)\n\n )",
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"code": "-spec odd_string(Words :: [unicode:unicode_binary()]) -> unicode:unicode_binary().\nodd_string(Words) ->\n .",
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"code": "defmodule Solution do\n @spec odd_string(words :: [String.t]) :: String.t\n def odd_string(words) do\n\n end\nend",
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"hints": [
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"Find the difference integer array for each string.",
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"Compare them to find the odd one out."
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],
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"solution": null,
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"status": null,
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"sampleTestCase": "[\"adc\",\"wzy\",\"abc\"]",
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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>. 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