- 1. Entrada, impresión y números
 - 2. Números enteros y flotantes
 - 3. Condiciones: if-then-else
 - 4. Para bucle con rango
 - 5. Instrumentos de cuerda
 - 6. While loop
 - 7. Liza
 - 8. Funciones y recursión
 - 9. Listas bidimensionales (matrices)
 - 10. Conjuntos
 - 11. Diccionarios
 - 12. JavaScript
 - 13. HTML5 and CSS
 - 14. Responsive Design with Bootstrap
 - 15. jQuery
 
Ad place
                
            The second occurrence 
    
    
    
    
        Statement
        Given a string that may or may not contain the letter of interest. Print the index location of the second occurrence of the letter f. If the string contains the letter f only once, then print -1, and if the string does not contain the letter f, then print -2.
        
        
        
        
        In all the problems input the data using input() and print the result using print().
        
        
            
        
    
            
                
                
            
        
Statement
Given a string that may or may not contain the letter of interest. Print the index location of the second occurrence of the letterf. If the string contains the letter f only once, then print -1, and if the string does not contain the letter f, then print -2.
        In all the problems input the data using input() and print the result using print().