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6. The standard algorithm for multiplying two n-bit binary integers r and y costs (n). A naive divide-and-conquer algorithm is to let z=: 2/2a

   

6. The standard algorithm for multiplying two n-bit binary integers r and y costs (n). A naive divide-and-conquer algorithm is to let z=: 2/2a +b and y = 2n/c+d, then ry = = (2/2a + b) (2/2c+d) 2" ac + 2/2 (ad + bc) + bd The complexity is T(n) = 4T() + (n) = (n). There is no improvement to the standard algorithm. (a) By observing that ad + bc = (a + b)(c+d) - (ac+bd). we can use only three multiplications. Describe this divide-and-conquer algorithm in a pseudocode. (b) What is the complexity of the algorithm. (e) Illustrate the algorithm for multiplying integersz = 10011011 and y = 10111010 (just show one level of the recursion). Please provide full answer. Thanks in advance!

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