String - Practice Questions Write a python program using strings to read input from the user and count the character a. Write a python program using strings to read two input and convert the first...

Extracted text: String - Practice Questions Write a python program using strings to read input from the user and count the character a. Write a python program using strings to read two input and convert the first input to lowercase and second input to uppercase. Write a python program using strings to read input from the use and replace all the character a with z. Write a python program using strings to read input from the user and find the length of the string.