mirror of
https://gitee.com/coder-xiaomo/leetcode-problemset
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198 lines
18 KiB
JSON
198 lines
18 KiB
JSON
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"questionId": "1549",
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"title": "Longest Continuous Subarray With Absolute Diff Less Than or Equal to Limit",
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"content": "<p>Given an array of integers <code>nums</code> and an integer <code>limit</code>, return the size of the longest <strong>non-empty</strong> subarray such that the absolute difference between any two elements of this subarray is less than or equal to <code>limit</code><em>.</em></p>\n\n<p> </p>\n<p><strong class=\"example\">Example 1:</strong></p>\n\n<pre>\n<strong>Input:</strong> nums = [8,2,4,7], limit = 4\n<strong>Output:</strong> 2 \n<strong>Explanation:</strong> All subarrays are: \n[8] with maximum absolute diff |8-8| = 0 <= 4.\n[8,2] with maximum absolute diff |8-2| = 6 > 4. \n[8,2,4] with maximum absolute diff |8-2| = 6 > 4.\n[8,2,4,7] with maximum absolute diff |8-2| = 6 > 4.\n[2] with maximum absolute diff |2-2| = 0 <= 4.\n[2,4] with maximum absolute diff |2-4| = 2 <= 4.\n[2,4,7] with maximum absolute diff |2-7| = 5 > 4.\n[4] with maximum absolute diff |4-4| = 0 <= 4.\n[4,7] with maximum absolute diff |4-7| = 3 <= 4.\n[7] with maximum absolute diff |7-7| = 0 <= 4. \nTherefore, the size of the longest subarray is 2.\n</pre>\n\n<p><strong class=\"example\">Example 2:</strong></p>\n\n<pre>\n<strong>Input:</strong> nums = [10,1,2,4,7,2], limit = 5\n<strong>Output:</strong> 4 \n<strong>Explanation:</strong> The subarray [2,4,7,2] is the longest since the maximum absolute diff is |2-7| = 5 <= 5.\n</pre>\n\n<p><strong class=\"example\">Example 3:</strong></p>\n\n<pre>\n<strong>Input:</strong> nums = [4,2,2,2,4,4,2,2], limit = 0\n<strong>Output:</strong> 3\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>0 <= limit <= 10<sup>9</sup></code></li>\n</ul>\n",
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"Use a sliding window approach keeping the maximum and minimum value using a data structure like a multiset from STL in C++.",
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"More specifically, use the two pointer technique, moving the right pointer as far as possible to the right until the subarray is not valid (maxValue - minValue > limit), then moving the left pointer until the subarray is valid again (maxValue - minValue <= limit). Keep repeating this process."
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