save changess

app.py

@@ -1,8 +1,18 @@
 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_string = st.text_input(label="Enter a string:")
-if st.button("Reverse"):
-    reversed_string = reverse_string(input_string)
-    st.write(f"Reversed string: {reversed_string}")
+# 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.")