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#filename:vectorsSum.pyimport sysfrom datetime import datetimeimport numpy as np#numpyæ¹æ³def numpySum(n):a = np.arange(n, dtype = 'int64')**2#3次å¹å¤ªå¤§ä¼æº¢åºï¼æ³¨æ(åé¢ç»è¯´)b = np.arange(n, dtype = 'int64')**3c = a + breturn c#æ®éæ¹æ³def pythonSum(n):#range() è¿åçæ¯ârange objectâï¼èä¸æ¯å®é
çlist å¼,æ以è¿éè¦å ä¸lista = list(range(n))b = list(range(n))c = []for i in range(len(a)):a[i] = i ** 2b[i] = i ** 3c.append(a[i] + b[i])return csize = int(sys.argv[1])start = datetime.now()c = pythonSum(size)delta = datetime.now() - startprint ("æå两个å
ç´ çåï¼", c[-2:])print ("pythonSumè±è´¹çæ¶é´ï¼å¾®ç§ï¼", delta.microseconds)start = datetime.now()c = numpySum(size)delta = datetime.now() - startprint ("æå两个å
ç´ çåï¼", c[-2:])print ("numpySumè±è´¹çæ¶é´ï¼å¾®ç§ï¼", delta.microseconds)#ä¸é¢æµè¯ä¸ä¸å¯¹ä¸1000个ï¼2000个ï¼3000个åéå
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