Created
August 9, 2016 19:57
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| import random | |
| __author__ = 'mohammad' | |
| _memoization_map={} | |
| def try_collatz(num): | |
| try: | |
| # print num | |
| if num == 1: | |
| # print "Done" | |
| _memoization_map[num]=1 | |
| return 1 | |
| elif num in _memoization_map: | |
| return try_collatz(_memoization_map[num]) | |
| elif (num % 2 == 0): | |
| _memoization_map[num] = try_collatz(num / 2) | |
| return try_collatz(_memoization_map[num]) | |
| else: | |
| _memoization_map[num] = try_collatz((3 * num + 1) / 2) | |
| return try_collatz(_memoization_map[num]) | |
| except Exception, ex: | |
| raise ex | |
| if __name__ == '__main__': | |
| for x in range(90000,99500): | |
| try_collatz(random.randint(0,9923381239)) | |
| print len(_memoization_map) | |
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