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Best case for insertion sort is O(n), where the array is already sorted. The worst case, where the array is completely reversed, is O(n*n).

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8y ago
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8y ago

The worst case for insertion sort is O(n^2) for n elements.

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10y ago

quadratic running time Θn^2

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Q: What is insertion sorts in worst case time?
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Related questions

What would be the worst case time complexity of the insertion sort algorithm if the inputs are restricted to permutation of N with at most n inversions?

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