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Jan 2026 - Python - Week 6 - Strings 2 - Graded

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Jan 2026 - Python - Week 6 - Strings 2 - Graded

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Strings 2 - Graded

Course: Jan 2026 - Python

Strings 2 - Graded

Submission deadline has passed for this assignment

Due Mar 25, 2026 at 11:59 PM IST

Instructions

Use "Test Run" to verify your code with public test cases.

Press "Submit" to have your assignment evaluated.

You can submit your assignment multiple times up until the deadline.

Make sure to submit your final code by the deadline to receive your score.

Summary

100 out of100

Score

Public Tests

3/3 Passed

Submitted on Mar 25, 2026 at 2:26 PM IST

Private Tests

3/3 Passed

Submitted on Mar 25, 2026 at 2:26 PM IST

**Change in eligibility criteria to write oppe2 exam: A5>=40/100 AND A6>=40/100 AND A7>=40/100 AND A8>=40/100. and becoming eligible to give the end term exam.

Even Characters first and Odd Characters reversed**

Given a string, return a string with the characters in the even indices first and the characters in the odd indices next but in reversed order.

Example For the input "abcde",


even chars = "ace"
odd chars = "bd"; odd chars reversed = "db"
result = "acedb"

Template Code(Click to Expand)



def even_first_odd_reversed(s: str) -> str:
    '''Return a string with the characters in the even indices first
    and the characters in the odd indices reversed next.

    Arguments:
    s: str - the input string

    Return:
    str - modified string

    Example:
    >>> even_first_odd_reversed('abcde')
    'acedb'
    >>> even_first_odd_reversed('python')
    'ptonhy'
    '''
    ...

NOTE: You can use the below tools for working out and debugging. Click to open them in new tab.

PythonTutor | Starboard Notebook | Pyodide Terminal

Public Tests ( 3/3 )

Case 1

Input:


text
is_equal(even_first_odd_reversed('abcde'), 'acedb')

Expected Output:


text
'acedb'

Actual Output:


text
'acedb'

Case 2

Input:


text
is_equal(even_first_odd_reversed('python'), 'ptonhy')

Expected Output:


text
'ptonhy'

Actual Output:


text
'ptonhy'

Case 3

Input:


text
is_equal(even_first_odd_reversed('abracadabra'), 'arcdbaraaab')

Expected Output:


text
'arcdbaraaab'

Actual Output:


text
'arcdbaraaab'

Private Tests ( 3/3 )

Case 1

Input:


text
is_equal(even_first_odd_reversed('1'), '1')
is_equal(even_first_odd_reversed('123'), '132')

Expected Output:


text
'1'

'132'

Actual Output:


text
'1'

'132'

Case 2

Input:


text
is_equal(even_first_odd_reversed('this is a line'), 'ti salnei  ish')

Expected Output:


text
'ti salnei  ish'

Actual Output:


text
'ti salnei  ish'

Case 3

Input:


text
is_equal(even_first_odd_reversed('1234567890'), '1357908642')

Expected Output:


text
'1357908642'

Actual Output:


text
'1357908642'

💻 IITM Official Solution


python

def even_first_odd_reversed(s: str) -> str:
    '''Return a string with the characters in the even indices first
    and the characters in the odd indices reversed next.

    Arguments:
    s: str - the input string

    Return:
    str - modified string

    Example:
    >>> even_first_odd_reversed('abcde')
    'acedb'
    >>> even_first_odd_reversed('python')
    'ptonhy'
    '''

    return s[::2]+s[1::2][::-1]

💻 My Submitted Code


python

def even_first_odd_reversed(s: str) -> str:
    '''Return a string with the characters in the even indices first
    and the characters in the odd indices reversed next.

    Arguments:
    s: str - the input string

    Return:
    str - modified string

    Example:
    >>> even_first_odd_reversed('abcde')
    'acedb'
    >>> even_first_odd_reversed('python')
    'ptonhy'
    '''
    ...

    even_chars = s[0::2]
    odd_chars = s[1::2]
    odd_reversed = odd_chars[::-1]
    return even_chars + odd_reversed