MergeSort Algorithm Applied to the E, X, A, M, P, L, E List

Question

Apply merge-sort to sort the list E, X, A, M, P, L, E in alphabetical order.

Solution Preview

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We can consider our array to sort by MergeSort being A[0..6] where A[0]=E, A[1]=X,…A[6]=E.

Pseudo-code:
If 0<6 then middle=FLOOR[(0+6)/2]=3
MERGE (A,0,3) //1st recursive call on the first half
MERGE (A,3+1=4,6) //2nd recursive call on the second half...

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