[python, array] 最簡單存取陣列最後一個元素, index 用 -1

1. [index] python array 接受 -1 index. 最後一項 (ref)
1. 
   

#code xList = [1, 2, 3] xArray = np.asarray(xList) x1 = xArray[0] print('x1 = ', x1) x = xArray[-1] print('x = ', x) #Result x1 = 1 x = 3

2.