Python Program to Remove the Characters of Odd Index Values in a String

 This is a Python Program to remove the characters of odd index values in a string.

Problem Description

The program takes a string and removes the characters of odd index values in the string.

Problem Solution

1. Take a string from the user and store it in a variable.
2. Pass the string as an argument to a function.
3. In the function, initialize a variable to an empty character.
4. Use a for loop to traverse through the string.
5. Use an if statement to check if the index of the string is odd or even.
6. If the index is odd, append the no character to the string.
7. Then print the modified string.
8. Exit.

Program/Source Code

Here is source code of the Python Program to remove the characters of odd index values in a string. The program output is also shown below.

def modify(string):  
  final = ""   
  for i in range(len(string)):  
    if i % 2 == 0:  
      final = final + string[i]  
  return final
string=raw_input("Enter string:")
print("Modified string is:")
print(modify(string))

Program Explanation

1. User must enter a string and store it in a variable.
2. This string is passed as an argument to a function.
3. In the function, a variable is initialized with an empty character.
4. A for loop is used to traverse through the string.
5. An if statement checks if the index of the string is odd or even.
6. If the index is odd, the empty character variable is appended to the string thus indirectly removing the character.
7. Finally the modified string is printed.

Runtime Test Cases

 
Case 1:
Enter string:hello
Modified string is:
hlo
 
Case 2:
Enter string:checking
Modified string is:
cekn