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MERGE SORT (1st TASK)
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There are 10 elements;
 Runtime is 3.93437E-5
There are 100 elements;
 Runtime is 4.00818E-5
There are 1000 elements;
 Runtime is 2.024204E-4
There are 10000 elements;
 Runtime is 0.0017666863999999997
There are 100000 elements;
 Runtime is 0.0140321991
There are 1000000 elements;
 Runtime is 0.13856851739999998
There are 10000000 elements;
 Runtime is 1.4235166672