mirror of
https://gitee.com/coder-xiaomo/leetcode-problemset
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186 lines
18 KiB
JSON
186 lines
18 KiB
JSON
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"questionId": "2430",
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"title": "Number of Excellent Pairs",
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"content": "<p>You are given a <strong>0-indexed</strong> positive integer array <code>nums</code> and a positive integer <code>k</code>.</p>\n\n<p>A pair of numbers <code>(num1, num2)</code> is called <strong>excellent</strong> if the following conditions are satisfied:</p>\n\n<ul>\n\t<li><strong>Both</strong> the numbers <code>num1</code> and <code>num2</code> exist in the array <code>nums</code>.</li>\n\t<li>The sum of the number of set bits in <code>num1 OR num2</code> and <code>num1 AND num2</code> is greater than or equal to <code>k</code>, where <code>OR</code> is the bitwise <strong>OR</strong> operation and <code>AND</code> is the bitwise <strong>AND</strong> operation.</li>\n</ul>\n\n<p>Return <em>the number of <strong>distinct</strong> excellent pairs</em>.</p>\n\n<p>Two pairs <code>(a, b)</code> and <code>(c, d)</code> are considered distinct if either <code>a != c</code> or <code>b != d</code>. For example, <code>(1, 2)</code> and <code>(2, 1)</code> are distinct.</p>\n\n<p><strong>Note</strong> that a pair <code>(num1, num2)</code> such that <code>num1 == num2</code> can also be excellent if you have at least <strong>one</strong> occurrence of <code>num1</code> in the array.</p>\n\n<p> </p>\n<p><strong class=\"example\">Example 1:</strong></p>\n\n<pre>\n<strong>Input:</strong> nums = [1,2,3,1], k = 3\n<strong>Output:</strong> 5\n<strong>Explanation:</strong> The excellent pairs are the following:\n- (3, 3). (3 AND 3) and (3 OR 3) are both equal to (11) in binary. The total number of set bits is 2 + 2 = 4, which is greater than or equal to k = 3.\n- (2, 3) and (3, 2). (2 AND 3) is equal to (10) in binary, and (2 OR 3) is equal to (11) in binary. The total number of set bits is 1 + 2 = 3.\n- (1, 3) and (3, 1). (1 AND 3) is equal to (01) in binary, and (1 OR 3) is equal to (11) in binary. The total number of set bits is 1 + 2 = 3.\nSo the number of excellent pairs is 5.</pre>\n\n<p><strong class=\"example\">Example 2:</strong></p>\n\n<pre>\n<strong>Input:</strong> nums = [5,1,1], k = 10\n<strong>Output:</strong> 0\n<strong>Explanation:</strong> There are no excellent pairs for this array.\n</pre>\n\n<p> </p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>1 <= nums.length <= 10<sup>5</sup></code></li>\n\t<li><code>1 <= nums[i] <= 10<sup>9</sup></code></li>\n\t<li><code>1 <= k <= 60</code></li>\n</ul>\n",
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"code": "class Solution(object):\n def countExcellentPairs(self, nums, k):\n \"\"\"\n :type nums: List[int]\n :type k: int\n :rtype: int\n \"\"\"\n ",
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"code": "# @param {Integer[]} nums\n# @param {Integer} k\n# @return {Integer}\ndef count_excellent_pairs(nums, k)\n \nend",
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"code": "object Solution {\n def countExcellentPairs(nums: Array[Int], k: Int): Long = {\n \n }\n}",
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"code": "impl Solution {\n pub fn count_excellent_pairs(nums: Vec<i32>, k: i32) -> i64 {\n \n }\n}",
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"code": "-spec count_excellent_pairs(Nums :: [integer()], K :: integer()) -> integer().\ncount_excellent_pairs(Nums, K) ->\n .",
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"Can you find a different way to describe the second condition?",
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"The sum of the number of set bits in (num1 OR num2) and (num1 AND num2) is equal to the sum of the number of set bits in num1 and num2."
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