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Of the problem: programming simulated coin flip from a positive frequency map. Assuming a 10 per throw event, recording the number of times each receive a positive, throwing a total of 100,000 times, the calculated probability of a positive number of issued and graphics output. Ideas: Probability values commonly used in solving numerical problems, such algorithms are often derived from the approximate solution and the approximate solution accuracy with the increase of computing time rising to a certain precision approximate solution to meet the problem requirements.