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27 lines
667 B
Python
27 lines
667 B
Python
"""
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Wiggle Sort.
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Given an unsorted array nums, reorder it such
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that nums[0] < nums[1] > nums[2] < nums[3]....
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For example:
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if input numbers = [3, 5, 2, 1, 6, 4]
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one possible Wiggle Sorted answer is [3, 5, 1, 6, 2, 4].
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"""
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def wiggle_sort(nums):
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"""Perform Wiggle Sort."""
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for i in range(len(nums)):
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if (i % 2 == 1) == (nums[i - 1] > nums[i]):
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nums[i - 1], nums[i] = nums[i], nums[i - 1]
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if __name__ == '__main__':
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print("Enter the array elements:\n")
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array = list(map(int, input().split()))
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print("The unsorted array is:\n")
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print(array)
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wiggle_sort(array)
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print("Array after Wiggle sort:\n")
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print(array)
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