Question 4 of 6intermediate🔧 ApplyLong Answer4 marks

Write a function deleteChar() which takes two parameters one is a string and other is a character. The function should create a new string after deleting all occurrences of the character from the string and return the new string.

Correct Answer

python

Function to delete all occurrences of a character from a string

def deleteChar(string, char): # Create an empty string newstr = '' for character in string: # Check if character is not equal to the character to be deleted if character != char: newstr += character return newstr

End of function

Main program to test the function

st = input("Enter a string: ") ch = input("Enter the character to be deleted: ") result = deleteChar(st, ch) print("The original string is:", st) print("The modified string is:", result)

Output:

Enter a string: Hello World Enter the character to be deleted: l The original string is: Hello World The modified string is: Heo Word

The function deleteChar() takes two parameters: a string and a character. It creates an empty string named newstr to store the result. Using a for loop, it iterates through each character in the input string. Inside the loop, an if statement checks if the current character is not equal to the character to be deleted. If the condition is true, the character is concatenated to newstr using the += operator. Finally, the function returns the new string with all specified characters removed.

Exercise: PROGRAMMING PROBLEMS | Q: 3 | (Page 14)
For More Understanding

Explanation

This answer follows the pattern shown in Program 8-2 from the textbook, which demonstrates how to create a new string by iterating through characters and conditionally adding them. The function uses the same approach of creating an empty string, looping through each character, checking a condition, and building the result string. The logic is inverted from Program 8-2 - instead of replacing matching characters, we exclude them from the new string.

Solution Steps

  1. Step 1: Define function deleteChar() with two parameters - string and char

  2. Step 2: Create an empty string newstr to store the result

  3. Step 3: Use a for loop to iterate through each character in the string

  4. Step 4: Check if current character is NOT equal to the character to delete

  5. Step 5: If condition is true, concatenate the character to newstr

  6. Step 6: Return the new string after the loop completes

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