Question

考虑下面的代码是有一个函数，它采用奇数索引值并将其放在数组中，偶数将它放在另一个数组中然后将两个数组元素相互关联，以便对它进行一些处理。

要运行：＆＃34;）如果IN ==＆＃39; 1＆＃39;：

 PN = input("   Enter each process time following by its arrival time separated by comma:")
        Ptimes = [] 
        Atimes = []

Answer 1

您可以在偶数索引中获取值：

PN[::2]  # Start at 0, jump every two so 0, 2 etc.

和奇怪的人一样：

PN[1::2]  # Start at 1, jump every two so 1, 3 etc.

Answer 2

如果您习惯于从零开始的数组（索引0，索引1）：

even = data[::2]  # even indices: 0, 2, 4, ...
odds = data[1::2]  # odd indices: 1, 3, 5, ...

如果想考虑基于一个数组（第一个元素，第二个元素）：

odds = data[::2]  # 1st element, 3rd element, ...
even = data[1::2]  # 2nd element, 4th element, ...