mirror of
https://gitee.com/coder-xiaomo/leetcode-problemset
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185 lines
18 KiB
JSON
185 lines
18 KiB
JSON
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"title": "Find the K-th Character in String Game I",
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"content": "<p>Alice and Bob are playing a game. Initially, Alice has a string <code>word = "a"</code>.</p>\n\n<p>You are given a <strong>positive</strong> integer <code>k</code>.</p>\n\n<p>Now Bob will ask Alice to perform the following operation <strong>forever</strong>:</p>\n\n<ul>\n\t<li>Generate a new string by <strong>changing</strong> each character in <code>word</code> to its <strong>next</strong> character in the English alphabet, and <strong>append</strong> it to the <em>original</em> <code>word</code>.</li>\n</ul>\n\n<p>For example, performing the operation on <code>"c"</code> generates <code>"cd"</code> and performing the operation on <code>"zb"</code> generates <code>"zbac"</code>.</p>\n\n<p>Return the value of the <code>k<sup>th</sup></code> character in <code>word</code>, after enough operations have been done for <code>word</code> to have <strong>at least</strong> <code>k</code> characters.</p>\n\n<p><strong>Note</strong> that the character <code>'z'</code> can be changed to <code>'a'</code> in the operation.</p>\n\n<p> </p>\n<p><strong class=\"example\">Example 1:</strong></p>\n\n<div class=\"example-block\">\n<p><strong>Input:</strong> <span class=\"example-io\">k = 5</span></p>\n\n<p><strong>Output:</strong> <span class=\"example-io\">"b"</span></p>\n\n<p><strong>Explanation:</strong></p>\n\n<p>Initially, <code>word = "a"</code>. We need to do the operation three times:</p>\n\n<ul>\n\t<li>Generated string is <code>"b"</code>, <code>word</code> becomes <code>"ab"</code>.</li>\n\t<li>Generated string is <code>"bc"</code>, <code>word</code> becomes <code>"abbc"</code>.</li>\n\t<li>Generated string is <code>"bccd"</code>, <code>word</code> becomes <code>"abbcbccd"</code>.</li>\n</ul>\n</div>\n\n<p><strong class=\"example\">Example 2:</strong></p>\n\n<div class=\"example-block\">\n<p><strong>Input:</strong> <span class=\"example-io\">k = 10</span></p>\n\n<p><strong>Output:</strong> <span class=\"example-io\">"c"</span></p>\n</div>\n\n<p> </p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>1 <= k <= 500</code></li>\n</ul>\n",
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"exampleTestcases": "5\n10",
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"categoryTitle": "Algorithms",
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"code": "class Solution(object):\n def kthCharacter(self, k):\n \"\"\"\n :type k: int\n :rtype: str\n \"\"\"\n ",
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"code": "/**\n * @param {number} k\n * @return {character}\n */\nvar kthCharacter = function(k) {\n \n};",
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"lang": "PHP",
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"code": "class Solution {\n\n /**\n * @param Integer $k\n * @return String\n */\n function kthCharacter($k) {\n \n }\n}",
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"lang": "Swift",
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"code": "class Solution {\n func kthCharacter(_ k: Int) -> Character {\n \n }\n}",
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"lang": "Kotlin",
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"code": "class Solution {\n fun kthCharacter(k: Int): Char {\n \n }\n}",
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"lang": "Dart",
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"code": "class Solution {\n String kthCharacter(int k) {\n \n }\n}",
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"code": "# @param {Integer} k\n# @return {Character}\ndef kth_character(k)\n \nend",
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"The constraints are small. Construct the string by simulating the operations."
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