time, space complexity and O notation problem

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Plain English explanation of Big O

I can't find any sufficient help for learn or understand about O-notation, and how learn about time or space complexity. So please suggest me , where can I start this. Its really need to me, for now these time.So please give me solution quick. Thanks a lot in advance.


Best explanation of Big O I've ever seen:

What is a plain English explanation of "Big O" notation?


算法http://ecx.images-amazon.com/images/I/41hJ7gLDOmL._SL500_AA300_.jpg


Uh, Wikipedia? Although Big O notation (and algorithm analysis in general) is a pretty broad and substantial topic, so I doubt you're going to find a "quick solution" to learning it.

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