Big 0 theta notation

Posted by niggersak on Stack Overflow See other posts from Stack Overflow or by niggersak
Published on 2010-04-27T09:55:10Z Indexed on 2010/04/27 10:13 UTC
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Can some pls help with the solution

Use big-O notation to classify the traditional grade school algorithms for addition and multiplication. That is, if asked to add two numbers each having N digits, how many individual additions must be performed? If asked to multiply two N-digit numbers, how many individual multiplications are required?
Suppose f is a function that returns the result of reversing the string of symbols given as its input, and g is a function that returns the concatenation of the two strings given as its input. If x is the string hrwa, what is returned by g(f(x),x)? Explain your answer - don't just provide the result!

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