Describe Merge sort algorithm
Briefly describe the term merge sort algorithm?
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A merge sort algorithm which splits the items to be sorted in two groups, recursively sorts each group, and merges them in a final, sorted sequence. Run time is T(n log n).
If n<2 then the array is already sorted. Stop now.
Otherwise, n>1, and we perform the subsequent three steps in sequence:
Sort the left half of the array.
Sort the right half of the array.
Merge the now-sorted left and right halves.
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