Search In Rotated Sorted Array
Detailed guide and Python implementation for the 'Search In Rotated Sorted Array' problem.
Problem Statement
There is an integer array nums sorted in ascending order (with distinct values). Prior to being passed to your function, nums is possibly rotated at an unknown pivot index k (1 <= k < nums.length) such that the resulting array is [nums[k], nums[k+1], ..., nums[n-1], nums[0], nums[1], ..., nums[k-1]].
Given the array nums after the possible rotation and an integer target, return the index of target if it is in nums, or -1 if it is not in nums.
You must write an algorithm with O(log n) runtime complexity.
Write a function search(nums: List[int], target: int) -> int.
- •1 <= len(nums) <= 5000
- •-10^4 <= nums[i] <= 10^4
- •All values of nums are unique
- •nums is an ascending array that is possibly rotated
- •-10^4 <= target <= 10^4
Examples
nums = [4, 5, 6, 7, 0, 1, 2], target = 0
4
0 is found at index 4.
nums = [4, 5, 6, 7, 0, 1, 2], target = 3
-1
3 is not in the array.
nums = [1], target = 0
-1
0 is not in the array.
Need a Hint?
Edge Cases to Watch
- Empty input structures
- Single element inputs
- Large numerical bounds
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