{ "data": { "question": { "questionId": "1878", "questionFrontendId": "1752", "boundTopicId": null, "title": "Check if Array Is Sorted and Rotated", "titleSlug": "check-if-array-is-sorted-and-rotated", "content": "

Given an array nums, return true if the array was originally sorted in non-decreasing order, then rotated some number of positions (including zero). Otherwise, return false.

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There may be duplicates in the original array.

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Note: An array A rotated by x positions results in an array B of the same length such that A[i] == B[(i+x) % A.length], where % is the modulo operation.

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Example 1:

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\nInput: nums = [3,4,5,1,2]\nOutput: true\nExplanation: [1,2,3,4,5] is the original sorted array.\nYou can rotate the array by x = 3 positions to begin on the the element of value 3: [3,4,5,1,2].\n
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Example 2:

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\nInput: nums = [2,1,3,4]\nOutput: false\nExplanation: There is no sorted array once rotated that can make nums.\n
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Example 3:

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\nInput: nums = [1,2,3]\nOutput: true\nExplanation: [1,2,3] is the original sorted array.\nYou can rotate the array by x = 0 positions (i.e. no rotation) to make nums.\n
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Constraints:

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