Using jupyter $..$

Activity$-2$

Identify two strings and make the operations on them $,$ looking for a specific index, and pr inting a specific indexes$)$

Activity$-3$

Write a string "Java is Object$-$Oriented and Java is Portable $"$ then apply the function replace$()$ to change Java to "Python" in the beginning and in the end then print it$,$ apply the function an other time to change it at the beginning and at the end, then print it$.$