Consider merging k sorted arrays, each of size n. A straight forward generalization of the standard two way merge has time (k²n), since it requires finding the minimum among the le candidates for kn outputs. We can do better with divide and conquer. 2.1. Algorithm Give a divide and conquer algorithm satisfying the recurrence T(m) = 2T (m/2) + 0(m) where m = kn is the total input size. You may assume you are given a linear time subroutine merge2 to merge two arrays as we discussed in class.

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Consider merging k sorted arrays, each of size n. A straight forward generalization of the standard two way
merge has time (k²n), since it requires finding the minimum among the ke candidates for kn outputs. We
can do better with divide and conquer.
2.1. Algorithm
Give a divide and conquer algorithm satisfying the recurrence
T(m) = 2T(m/2) + 0(m)
where m = kn is the total input size. You may assume you are given a linear time subroutine merge2 to
merge two arrays as we discussed in class.
Transcribed Image Text:Consider merging k sorted arrays, each of size n. A straight forward generalization of the standard two way merge has time (k²n), since it requires finding the minimum among the ke candidates for kn outputs. We can do better with divide and conquer. 2.1. Algorithm Give a divide and conquer algorithm satisfying the recurrence T(m) = 2T(m/2) + 0(m) where m = kn is the total input size. You may assume you are given a linear time subroutine merge2 to merge two arrays as we discussed in class.
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