Python Example – Write a Python program to create a deque and append few elements to the left and right, then remove some elements from the left, right sides and reverse the deque

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Write a Python program to create a deque and append few elements to the left and right, then remove some elements from the left, right sides and reverse the deque.

 

Sample Solution:

Python Code:


import collections

deque_colors = collections.deque(["Red","Green","White"])
print(deque_colors)

print("\nAdding to the left: ")
deque_colors.appendleft("Pink")
print(deque_colors)

print("\nAdding to the right: ")
deque_colors.append("Orange")
print(deque_colors)

print("\nRemoving from the right: ")
deque_colors.pop()
print(deque_colors)

print("\nRemoving from the left: ")
deque_colors.popleft()
print(deque_colors)

print("\nReversing the deque: ")
deque_colors.reverse()
print(deque_colors)

Sample Output:

deque(['Red', 'Green', 'White'])

Adding to the left: 
deque(['Pink', 'Red', 'Green', 'White'])

Adding to the right: 
deque(['Pink', 'Red', 'Green', 'White', 'Orange'])

Removing from the right: 
deque(['Pink', 'Red', 'Green', 'White'])

Removing from the left: 
deque(['Red', 'Green', 'White'])

Reversing the deque: 
deque(['White', 'Green', 'Red'])

 

Write a Python program to create a deque and append few elements to the left and right, then remove some elements from the left, right sides and reverse the deque

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