mirror of
https://gitee.com/coder-xiaomo/leetcode-problemset
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156 lines
15 KiB
JSON
156 lines
15 KiB
JSON
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"questionId": "1359",
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"title": "Circular Permutation in Binary Representation",
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"content": "<p>Given 2 integers <code>n</code> and <code>start</code>. Your task is return <strong>any</strong> permutation <code>p</code> of <code>(0,1,2.....,2^n -1) </code>such that :</p>\r\n\r\n<ul>\r\n\t<li><code>p[0] = start</code></li>\r\n\t<li><code>p[i]</code> and <code>p[i+1]</code> differ by only one bit in their binary representation.</li>\r\n\t<li><code>p[0]</code> and <code>p[2^n -1]</code> must also differ by only one bit in their binary representation.</li>\r\n</ul>\r\n\r\n<p> </p>\r\n<p><strong class=\"example\">Example 1:</strong></p>\r\n\r\n<pre>\r\n<strong>Input:</strong> n = 2, start = 3\r\n<strong>Output:</strong> [3,2,0,1]\r\n<strong>Explanation:</strong> The binary representation of the permutation is (11,10,00,01). \r\nAll the adjacent element differ by one bit. Another valid permutation is [3,1,0,2]\r\n</pre>\r\n\r\n<p><strong class=\"example\">Example 2:</strong></p>\r\n\r\n<pre>\r\n<strong>Input:</strong> n = 3, start = 2\r\n<strong>Output:</strong> [2,6,7,5,4,0,1,3]\r\n<strong>Explanation:</strong> The binary representation of the permutation is (010,110,111,101,100,000,001,011).\r\n</pre>\r\n\r\n<p> </p>\r\n<p><strong>Constraints:</strong></p>\r\n\r\n<ul>\r\n\t<li><code>1 <= n <= 16</code></li>\r\n\t<li><code>0 <= start < 2 ^ n</code></li>\r\n</ul>",
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"categoryTitle": "Algorithms",
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"name": "Math",
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"name": "Bit Manipulation",
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"lang": "C++",
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"code": "class Solution {\r\npublic:\r\n vector<int> circularPermutation(int n, int start) {\r\n \r\n }\r\n};",
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"code": "class Solution {\r\n public List<Integer> circularPermutation(int n, int start) {\r\n \r\n }\r\n}",
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"lang": "Python",
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"langSlug": "python",
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"code": "class Solution(object):\r\n def circularPermutation(self, n, start):\r\n \"\"\"\r\n :type n: int\r\n :type start: int\r\n :rtype: List[int]\r\n \"\"\"",
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"code": "/**\r\n * Note: The returned array must be malloced, assume caller calls free().\r\n */\r\nint* circularPermutation(int n, int start, int* returnSize){\r\n\r\n}",
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"code": "public class Solution {\r\n public IList<int> CircularPermutation(int n, int start) {\r\n \r\n }\r\n}",
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"code": "/**\r\n * @param {number} n\r\n * @param {number} start\r\n * @return {number[]}\r\n */\r\nvar circularPermutation = function(n, start) {\r\n \r\n};",
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"code": "function circularPermutation(n: number, start: number): number[] {\r\n\r\n};",
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"code": "class Solution {\r\n\r\n /**\r\n * @param Integer $n\r\n * @param Integer $start\r\n * @return Integer[]\r\n */\r\n function circularPermutation($n, $start) {\r\n \r\n }\r\n}",
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"code": "class Solution {\r\n func circularPermutation(_ n: Int, _ start: Int) -> [Int] {\r\n \r\n }\r\n}",
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"code": "class Solution {\r\n fun circularPermutation(n: Int, start: Int): List<Int> {\r\n \r\n }\r\n}",
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"code": "func circularPermutation(n int, start int) []int {\r\n \r\n}",
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"code": "# @param {Integer} n\r\n# @param {Integer} start\r\n# @return {Integer[]}\r\ndef circular_permutation(n, start)\r\n \r\nend",
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"lang": "Scala",
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"langSlug": "scala",
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"code": "object Solution {\r\n def circularPermutation(n: Int, start: Int): List[Int] = {\r\n \r\n }\r\n}",
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},
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{
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"lang": "Rust",
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"langSlug": "rust",
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"code": "impl Solution {\r\n pub fn circular_permutation(n: i32, start: i32) -> Vec<i32> {\r\n \r\n }\r\n}",
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"hints": [
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"Use gray code to generate a n-bit sequence.",
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"Rotate the sequence such that its first element is start."
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],
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"sampleTestCase": "2\n3",
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