Created
May 12, 2013 09:01
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Correct code from papashangu
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| def rabbitGrowth(): | |
| global CURRENTRABBITPOP | |
| global MAXRABBITPOP | |
| num = CURRENTRABBITPOP | |
| for i in xrange(num): | |
| if random.random() < (1 - (float(CURRENTRABBITPOP) / MAXRABBITPOP)): | |
| CURRENTRABBITPOP += 1 | |
| def foxGrowth(): | |
| global CURRENTRABBITPOP | |
| global CURRENTFOXPOP | |
| global MAXRABBITPOP | |
| num = CURRENTFOXPOP | |
| for i in xrange(num): | |
| if (random.random() < (float(CURRENTRABBITPOP) / MAXRABBITPOP)) and (CURRENTRABBITPOP > 10): | |
| CURRENTRABBITPOP -= 1 | |
| if random.random() < (float(1) / 3): | |
| CURRENTFOXPOP += 1 | |
| else: | |
| if (random.random() < 0.1) and (CURRENTFOXPOP > 10): | |
| CURRENTFOXPOP -= 1 | |
| def runSimulation(numSteps): | |
| global CURRENTRABBITPOP | |
| global CURRENTFOXPOP | |
| rabbit_populations = [] | |
| fox_populations = [] | |
| for i in xrange(numSteps): | |
| rabbitGrowth() | |
| foxGrowth() | |
| rabbit_populations.append(CURRENTRABBITPOP) | |
| fox_populations.append(CURRENTFOXPOP) | |
| return (rabbit_populations, fox_populations) |
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