#encrypt a text
#encryption: Encryption is the process of encoding the data. i.e converting plain text into ciphertext
#Decryption is a process of decoding the encoded data. Converting the ciphertext into plain text
''''plain text ---->>>> key  ----->>> unknown text'''     #encryption
''''unknown text ---->>>> key  ----->>> plain text'''     #decryption
'''Step 1: Reverse the input: “elppa”  apple
Step 2: Replace all vowels using the following chart:
# and values
dict = {"a": "0", "e": "1",
        "i": "2", "o": "2",
        "u": "3"}
Step 3: Add “aca” to the end of the word:'''
# Create an input field
text = "banana"
# Create a dictionary to store keys
# and values
dict = {"a": "0", "e": "1",
        "i": "2", "o": "2",
        "u": "3"}

# Reverse the string
num = text[::-1]
print(num)

# Replace vowels using loops
for i in dict:
    num = num.replace(i, dict[i])

print(num)


# f- strings which improves readability
print(f"{num}aca")