def match_patterns(patterns, data):

"""

Matches patterns of arrays within data, optimizing for memory.

Args:

patterns: A list of array patterns to search for. Each pattern

is a tuple of (start_index, end_index) representing a range

of indices within the data array.

data: The data array to search within.

Returns:

A dictionary where keys are the pattern indices and values are the

corresponding pattern ranges within the data. Returns an empty

dictionary if no patterns are found.

"""

results = {}

data_len = len(data)

for i, pattern in enumerate(patterns):

start, end = pattern

if 0 <= start <= end < data_len:

results[i] = (start, end)

return results