mirror of
https://gitee.com/coder-xiaomo/leetcode-problemset
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183 lines
16 KiB
JSON
183 lines
16 KiB
JSON
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"questionId": "564",
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"title": "Find the Closest Palindrome",
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"content": "<p>Given a string <code>n</code> representing an integer, return <em>the closest integer (not including itself), which is a palindrome</em>. If there is a tie, return <em><strong>the smaller one</strong></em>.</p>\n\n<p>The closest is defined as the absolute difference minimized between two integers.</p>\n\n<p> </p>\n<p><strong class=\"example\">Example 1:</strong></p>\n\n<pre>\n<strong>Input:</strong> n = "123"\n<strong>Output:</strong> "121"\n</pre>\n\n<p><strong class=\"example\">Example 2:</strong></p>\n\n<pre>\n<strong>Input:</strong> n = "1"\n<strong>Output:</strong> "0"\n<strong>Explanation:</strong> 0 and 2 are the closest palindromes but we return the smallest which is 0.\n</pre>\n\n<p> </p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>1 <= n.length <= 18</code></li>\n\t<li><code>n</code> consists of only digits.</li>\n\t<li><code>n</code> does not have leading zeros.</li>\n\t<li><code>n</code> is representing an integer in the range <code>[1, 10<sup>18</sup> - 1]</code>.</li>\n</ul>\n",
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"code": "class Solution {\npublic:\n string nearestPalindromic(string n) {\n \n }\n};",
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"code": "class Solution(object):\n def nearestPalindromic(self, n):\n \"\"\"\n :type n: str\n :rtype: str\n \"\"\"\n ",
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"lang": "Erlang",
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"code": "-spec nearest_palindromic(N :: unicode:unicode_binary()) -> unicode:unicode_binary().\nnearest_palindromic(N) ->\n .",
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"code": "defmodule Solution do\n @spec nearest_palindromic(n :: String.t) :: String.t\n def nearest_palindromic(n) do\n \n end\nend",
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"hints": [
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"Will brute force work for this problem? Think of something else.",
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"Take some examples like 1234, 999,1000, etc and check their closest palindromes. How many different cases are possible?",
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"Do we have to consider only left half or right half of the string or both?",
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"Try to find the closest palindrome of these numbers- 12932, 99800, 12120. Did you observe something?"
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],
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"sampleTestCase": "\"123\"",
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