Q:

Python | Iterate a list in reverse order

mahmoud2506
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2022-05-22
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Given a list and we have to iterate it in reverse order in python.

Example:

    Input:
    List = [10, 20, 30, 40, 50]
    Output:
    list = [50, 40, 30, 20, 10]


    Input;
    list = ['Hello', 10 'World', 20]
    Output:
    list = [20, 'World', 10, 'Hello']

Iterate a list in reverse order

To iterate a list in reverse order, list[::-1] is used. list[::-1] will return the list in reverse order.

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mahmoud2506
2022-05-22
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Program:

# define a list
list1  = [10, 20, 30, 40, 50]

# print the list 
print "original list: ", list1

# iterate the list
list1 = list1[::-1]

# print the list 
print "list in reverse order: ", list1

# another list with string and integer elements
list2 = ['Hello', 10, 'world', 20]

# print the list
print "Original list: ", list2

# iterate the list
list2 = list2[::-1]

# print the list
print "list in reverse order: ", list2

Output

    original list:  [10, 20, 30, 40, 50]
    list in reverse order:  [50, 40, 30, 20, 10]
    Original list:  ['Hello', 10, 'world', 20]
    list in reverse order:  [20, 'world', 10, 'Hello']

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