Now suppose that you are given two unsorted arrays A and B, con- taining m and n elements respectively. You are also given a black box O(n) selection algorithm SEL that can be called on A and B separately and, in addition, a small number (say, ten) of extra mem- ory words that can be used to store some extra data. Using SEL as a subroutine, design an O(n + m) algorithm for finding the kth smallest element in the combined set of O(m + n) elements. You may not merge the two arrays in another array and call an algo- rithm (either SEL or something you wrote) on this third array. This is because there is no extra memory available to build this third array.

Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
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Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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Now suppose that you are given two unsorted arrays A and B, con-
taining m and n elements respectively. You are also given a black
box O(n) selection algorithm SEL that can be called on A and B
separately and, in addition, a small number (say, ten) of extra mem-
ory words that can be used to store some extra data. Using SEL
as a subroutine, design an O(n + m) algorithm for finding the kth
smallest element in the combined set of O(m + n) elements.
You may not merge the two arrays in another array and call an algo-
rithm (either SEL or something you wrote) on this third array. This
is because there is no extra memory available to build this third array.
Transcribed Image Text:Now suppose that you are given two unsorted arrays A and B, con- taining m and n elements respectively. You are also given a black box O(n) selection algorithm SEL that can be called on A and B separately and, in addition, a small number (say, ten) of extra mem- ory words that can be used to store some extra data. Using SEL as a subroutine, design an O(n + m) algorithm for finding the kth smallest element in the combined set of O(m + n) elements. You may not merge the two arrays in another array and call an algo- rithm (either SEL or something you wrote) on this third array. This is because there is no extra memory available to build this third array.
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