Python程序将Numpy数组左移n次

编写一个Python程序，将Numpy数组左移n次或n个位置。为了左移数组，我们在示例中根据位置对数组进行了切片，并使用numpy的concatenate函数将其组合起来。

import numpy as np

ltArray = np.array([4, 7, 9, 11, 22, 55, 99, 125, 78, 345])

ltRotate = int(input("Enter Position to Left Rotate Array Elements = "))

print('Original Array Elements Before Left Rotating')
print(ltArray)

arr = np.concatenate((ltArray[ltRotate:], ltArray[:ltRotate]), axis = 0)

print('\nFinal Array Elements After Left Rotating')
print(arr)

此程序使用for循环将Numpy数组项按用户指定的位置左移。

import numpy as np

ltArray = np.array([19, 25, 32, 77, 28, 99, 44, 88])

ltRotate = int(input("Enter Position to Left Rotate Array Elements = "))

print('Original Array Elements Before Left Rotating')
print(ltArray)

for i in range(ltRotate):
    firstValue = ltArray[0]
    for j in range(len(ltArray) - 1):
        ltArray[j] = ltArray[j + 1]
    ltArray[len(ltArray) - 1] = firstValue

print('\nFinal Array Elements After Left Rotating')
print(ltArray)

Enter Position to Left Rotate Array Elements = 5
Original Array Elements Before Left Rotating
[19 25 32 77 28 99 44 88]

Final Array Elements After Left Rotating
[99 44 88 19 25 32 77 28]

在此示例中，leftRotateArray函数将向左旋转NumPy数组的项，printArrayItems函数打印数组项。

import numpy as np

def printArrayItems(ltArray):
    for i in ltArray:
        print(i, end = ' ')

def leftRotateArray(ltArray, ltRotate):
    for i in range(ltRotate):
        firstValue = ltArray[0]
        for j in range(len(ltArray) - 1):
            ltArray[j] = ltArray[j + 1]
        ltArray[len(ltArray) - 1] = firstValue

ltArray = np.random.randint(11, 110, size = 10)

ltRotate = int(input("\nEnter Position to Left Rotate Array Elements = "))

print('Original Array Elements Before Left Rotating')
printArrayItems(ltArray)

leftRotateArray(ltArray, ltRotate)
print('\nFinal Array Elements After Left Rotating')
printArrayItems(ltArray)

Enter Position to Left Rotate Array Elements = 7
Original Array Elements Before Left Rotating
73 45 65 97 84 99 40 18 77 105 
Final Array Elements After Left Rotating
18 77 105 73 45 65 97 84 99 40 

此程序帮助使用while循环将Numpy数组左移n次。

import numpy as np

def printArrayItems(ltArray):
    i = 0
    while i < len(ltArray):
        print(ltArray[i], end = ' ')
        i = i + 1

def leftRotateArray(ltArray, ltRotate):
    i = 0
    while(i < ltRotate):
        firstValue = ltArray[0]
        j = 0
        while(j < len(ltArray) - 1):
            ltArray[j] = ltArray[j + 1]
            j = j + 1
        ltArray[len(ltArray) - 1] = firstValue
        i = i + 1

ltArray = np.random.randint(70, 500, size = 15)

ltRotate = int(input("\nEnter Position to Left Rotate Array Elements = "))

print('Original Array Elements Before Left Rotating')
printArrayItems(ltArray)

leftRotateArray(ltArray, ltRotate)
print('\nFinal Array Elements After Left Rotating')
printArrayItems(ltArray)

Enter Position to Left Rotate Array Elements = 6
Original Array Elements Before Left Rotating
204 76 370 211 180 453 407 250 213 332 456 333 292 460 354 

Final Array Elements After Left Rotating
407 250 213 332 456 333 292 460 354 204 76 370 211 180 453