import streamlit as st

# Function to reverse a string
def reverse_string(input_string):
    return input_string[::-1]

# Streamlit UI
st.title("String Reversal App")

# Input box for user to enter a string
input_string = st.text_input("Enter a string:")

if st.button("Reverse String"):
    if input_string:
        reversed_string = reverse_string(input_string)
        st.write(f"Reversed String: {reversed_string}")
    else:
        st.write("Please enter a string to reverse.")