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Algorithms & data structures

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Algorithms & data structures medium

Find Peak Element in Python Using Binary Search

A binary search solution that finds any peak element (an element strictly greater than its neighbors) in an unsorted array in O(log n) time.

binary-search peak array
Python 
def find_peak_element(nums):
    left, right = 0, len(nums) - 1
    
    while left < right:
        mid = (left + right) // 2
        if nums[mid] > nums[mid + 1]:
            right = mid
        else:
            left = mid + 1
            
    return left

if __name__ == "__main__":
    test1 = [1, 2, 3, 1]
    tes…
18 0 Open

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