Practice Find Minimum in Rotated Sorted Array
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Find Minimum in Rotated Sorted Array
An ascending array of distinct integers has been rotated between one and n times, where n is its length. A rotation moves the final element to the front; n rotations restore the original order. Return the smallest value in O(log n) time. Practice approach: Binary search with a left and right boundary. If the middle value exceeds the rightmost value, the minimum lies strictly to the right of the middle. Otherwise the middle remains a candidate, so move the right boundary to it. Stop when both boundaries identify the same element. This also handles an already sorted array and uses O(1) extra space.
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Understanding the Find Minimum in Rotated Sorted Array Problem
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Problem Statement
An ascending array of distinct integers has been rotated between one and n times, where n is its length. A rotation moves the final element to the front; n rotations restore the original order. Return the smallest value in O(log n) time. Practice approach: Binary search with a left and right boundary. If the middle value exceeds the rightmost value, the minimum lies strictly to the right of the middle. Otherwise the middle remains a candidate, so move the right boundary to it. Stop when both boundaries identify the same element. This also handles an already sorted array and uses O(1) extra space.
Source: Find Minimum in Rotated Sorted Array on LeetCode. Use the original task for its coding environment and submissions.
Find Minimum in Rotated Sorted Array
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Examples
# Example 1
nums = [3,4,5,1,2]
1
# Example 2
nums = [4,5,6,7,0,1,2]
0
# Example 3
nums = [11,13,15,17]
11
Constraints
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