Answers for "reversed() python"

Python

reversed() python

#reversed() is used to reverse the order of elements of a str or a container
#you can't reverse a string and convert it back to a string using str()
a='redrum' ; b='ypareht deen I'
x=list(reversed(a))
y=list(reversed(b))
print(x)    #yeilds ['m','u','r','d','e','r']
print(y)    #yeilds['I',' ','n','e','e','d',' ','t','h','e','r','a','p','y']
#if we want a string version of the list, we can use the .join function
c=''.join(x) ; d=''.join(y)
print(c)    #yeilds: murder
print(d)    #yeilds: I need therapy

Posted by: Guest on February-19-2022

reversed python

# To reverse a list use simply: reverse() method

# Example 
list = [1, 2, 3]
list.reverse()

# Output
[3, 2, 1]

# to reverse any other type, we can use reversed() 
# The reversed() function returns an iterator that accesses the given sequence in the reverse order.

# Example 
list = [1, 2, 3]
list(reversed(list))

# Output
[3, 2, 1]

#  reversed() returns an iterator so we can loop over it

# Example
for num in reversed(list):
    print(num)

# Output
3
2
1

Posted by: Guest on February-24-2022

-2

reverse python3

arr = [2,5,32,86,4,131,97]

# reverse without modifying input, using range:
for i in range(len(arr)-1, -1, -1):
    print(arr[i])
    
# reverse and modifying input:
arr.reverse()

Posted by: Guest on May-27-2020

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