Python: 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
Python Collections: Exercise-7 with Solution
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
# Create a deque
deque_colors = collections.deque(["Red","Green","White"])
print(deque_colors)
# Append to the left
print("\nAdding to the left: ")
deque_colors.appendleft("Pink")
print(deque_colors)
# Append to the right
print("\nAdding to the right: ")
deque_colors.append("Orange")
print(deque_colors)
# Remove from the right
print("\nRemoving from the right: ")
deque_colors.pop()
print(deque_colors)
# Remove from the left
print("\nRemoving from the left: ")
deque_colors.popleft()
print(deque_colors)
# Reverse the dequeue
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'])
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Previous: Write a Python program that accept name of given subject and marks. Input number of subjects in first line and subject name, marks separated by a space in next line. Print subject name and marks in order of its first occurrence.
Next: Write a Python program to create a deque from an existing iterable object.
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Output:
passed passed passed passed
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