Python Program for Printing Odd and Even Letters of a String

Strings in Python:

String in Python. The string is an immutable sequence data type in Python. It is a string of Unicode letters surrounded by single, double, or triple quotations… This is the second string in the Multi-line format. If a string literal must embed double quotations as part of a string, it must be enclosed in single quotes.

Given the string, the task is to print even and odd index characters of the given string in Python.

Examples:

Example1:

Input:

The given string = BtechGeeks

Output:

The odd characters in given string =  Behek
The even characters in given string = tcGes

Example2:

Input:

The given string = uploadbutton

Output:

The odd characters in given string = ulabto
The even characters in given string = podutn

Python Program for Printing Odd and Even Letters of a String

Below are the ways to write a Python Program to print Odd and Even Letters of the given String.

• Using For loop and String Concatenation (Static Input)
• Using For loop and String Concatenation(User Input)

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Method #1: Using For Loop and String Concatenation (Static Input)

Approach:

• Give the string as static input and store it in a variable.
• Take two empty strings(say oddChars and evenChars) and initialize them with a null string using “”.
• Calculate the length of the string using the len() function and store it in a variable.
• Loop till the length of the string using For loop.
• Check if the iterator value is divisible by 2 or not using the If statement.
• If it is true then concatenate the string iterator value to the oddChars string.
• Else concatenate the string iterator value to the evenChars string.
• Print the oddChars string.
• Print the evenChars string.
• The Exit of the Program.

Below is the implementation:

# Give the string as static input and store it in a variable.
givenstring = 'BtechGeeks'
# Take two empty strings(say oddChars and evenChars)
# and initialize them with a null string using "".
evenChars = ""
oddChars = ""
# Calculate the length of the string using the len() function and store it in a variable.
strnglen = len(givenstring)
# Loop till the length of the string using For loop.
for itrvalue in range(strnglen):
    # Check if the iterator value is divisible by 2 or not using the If statement.
    #
    if itrvalue % 2 == 0:
        # If it is true then concatenate the string iterator value to the oddChars string
        oddChars = oddChars + givenstring[itrvalue]
    else:
        # Else concatenate the string iterator value to the evenChars string.
        evenChars = evenChars + givenstring[itrvalue]
print('The given string = ', givenstring)
# Print the oddChars string.
print('The odd characters in given string = ', oddChars)
# Print the evenChars string.
print('The even characters in given string =', evenChars)

Output:

The given string =  BtechGeeks
The odd characters in given string =  Behek
The even characters in given string = tcGes

Method #2: Using For Loop and String Concatenation (User Input)

Approach:

• Give the string as user input using the input() function and store it in a variable.
• Take two empty strings(say oddChars and evenChars) and initialize them with a null string using “”.
• Calculate the length of the string using the len() function and store it in a variable.
• Loop till the length of the string using For loop.
• Check if the iterator value is divisible by 2 or not using the If statement.
• If it is true then concatenate the string iterator value to the oddChars string.
• Else concatenate the string iterator value to the evenChars string.
• Print the oddChars string.
• Print the evenChars string.
• The Exit of the Program.

Below is the implementation:

# Give the string as user input using the input() function and store it in a variable.
givenstring = input('Enter some random string = ')
# Take two empty strings(say oddChars and evenChars)
# and initialize them with a null string using "".
evenChars = ""
oddChars = ""
# Calculate the length of the string using the len() function and store it in a variable.
strnglen = len(givenstring)
# Loop till the length of the string using For loop.
for itrvalue in range(strnglen):
    # Check if the iterator value is divisible by 2 or not using the If statement.
    #
    if itrvalue % 2 == 0:
        # If it is true then concatenate the string iterator value to the oddChars string
        oddChars = oddChars + givenstring[itrvalue]
    else:
        # Else concatenate the string iterator value to the evenChars string.
        evenChars = evenChars + givenstring[itrvalue]
print('The given string = ', givenstring)
# Print the oddChars string.
print('The odd characters in given string = ', oddChars)
# Print the evenChars string.
print('The even characters in given string =', evenChars)

Output:

Enter some random string = uploadbutton
The given string = uploadbutton
The odd characters in given string = ulabto
The even characters in given string = podutn

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