app.py

import streamlit as st

def main():
    st.title("Popular Data Structures")
    
    if st.button("What are the most popular data structures?"):
        st.write("Here are some of the most popular data structures:")
        st.write("- Arrays")
        st.write("- Linked Lists")
        st.write("- Stacks")
        st.write("- Queues")
        st.write("- Hash Tables")
        st.write("- Trees (e.g., Binary Trees, BST, AVL Trees)")
        st.write("- Graphs")
        
if __name__ == "__main__":
    main()