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Lists & loops

Iterate, transform, and combine sequences with readable loop patterns.

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Lists & loops easy

How to Find Local Maxima in a Python List

Return the indices of all local maxima in a numeric list, where a peak is an element greater than both its immediate neighbors.

local-maxima peaks list
Python 
def find_peaks(numbers):
    """
    Return the indices of local maxima in a numeric list.
    A local maximum is an element greater than both its neighbors.
    """
    if len(numbers) < 3:
        return []
    
    peaks = []
    for i in range(1, len(numbers) - 1):
        if numbers[i] > numbers[i - 1] and number…
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