Give an o(n log n) algorithm for the problem

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Given a set of S containing n real numbers, and a real number x. We seek an algorithm to determine whether two elements of S exist whose sum is exactly x.

(a) Assume that S is unsorted. Give an O(n log n) algorithm for the problem.

(b) Assume that S is sorted. Give an O(n) algorithm for the problem.

Reference no: EM131366396

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