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dairenyihao: ½ð±Ò+10 2014-05-19 14:35:49
pythonµÄ¶àάÊý×é¶ÁÈ¡ºÍÆäËüµÄ²»Ò»Ñù£¬a[b1,b2]Êǽ«b1ºÍb2ÖеÄTrue¶Ô½øÐжÔÓ¦£¬²úÉúºÍ¾ßÓÐTrueÏàͬάÊýµÄÊý×飬Òò´Ëa[b1,b2]Ï൱ÓÚÊÇa[[1,2],[0,2]]£¬²úÉúºÍ[1,2]ÏàͬάÊýµÄÊý×飬¶øÊý×éÖеÄÔªËØÔòÊǽ«b1£¬b2Ïà½áºÏËù²úÉúµÄË÷ÒýÔÚaÖжÔÓ¦µÄÊý£¬¼´aÖÐ(1,0)ºÍ(2,2)µÄÊý¡£Õâ¸öÊDZȽÏÌØÊâµÄÐÎʽ¡£ÈôÒª²úÉúarray([[4,6],[8,10]])µÄ½á¹û£¬Ó¦µ±Îª£º
>>> c=np.array([1,1,2,2])
>>> c.reshape(2,2)
array([[1, 1],
       [2, 2]])
>>> d = np.array([0,2,0,2])
>>> a[c.reshape(2,2),d.reshape(2,2)]
array([[ 4,  6],
       [ 8, 10]])
What would Jesus do?
2Â¥2014-05-19 13:58:08
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