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Implement External Merge Sort and using your algorithm sort a list of huge integers, so big...

Implement External Merge Sort and using your algorithm sort a list of huge integers, so big that it is not possible to apply normal merge sort on that list of integers because of memory constraints of your computer.

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In this answer External Merge Sort algorithm has been explained and also successfully implemented as well. Also an analysis of the time complexity has been mentioned for further understanding.

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