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    "# Write a Python program to sort a list of elements using shell sort algorithm.\n",
    "# Note : According to Wikipedia \"Shell sort or Shell's method, is an in-place comparison sort. \n",
    "# It can be seen as either a generalization of sorting by exchange (bubble sort) or sorting by insertion (insertion sort). \n",
    "# The method starts by sorting pairs of elements far apart from each other, then progressively reducing the gap between\n",
    "# elements to be compared. Starting with far apart elements can move some out-of-place elements into position faster than\n",
    "# a simple nearest neighbor exchange.\""
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