Run
# Input string x = "Hello, World! Hello, Universe!" # Substring to be replaced old_substring = "Hello" # Replacement string new_substring = "Hi" # Reverse the strings x_reversed = x[::-1] old_substring_reversed = old_substring[::-1] new_substring_reversed = new_substring[::-1] # Replace result_string_reversed = x_reversed.replace( old_substring_reversed, new_substring_reversed, 1) # Get result string result_string = result_string_reversed[::-1] # Print the result print(f"Original : {x}") print(f"Result : {result_string}")
Output