CSE 160 Section 2 Problems
	
1.  Fill in the necessary code to count the number of times the letter “l” 
    appears in the list words.

	words = [‘hello’, ‘world’, ‘python’, ‘yellow’] 
	l_count = 0

	
	


	print l_count 
	
	
	The output should be 5
	
	
2. Write a function, over_twenty(ages) to count the number of people 
   over 20 years old in the list ages.
	
	ages = [20, 21, 20, 22, 19, 18, 14, 35]









3. Write a function age_groups(ages) that calculates and prints out the number of people
   30 years old and above, the number of people 20-29 years old, and the number of people 
   under 20 years old in the list ages. 

	ages = [20, 21, 20, 22, 19, 18, 14, 35]
   
   
   
   
   
   
   
   
   
   
   
   



4. Write a function odd(num) that returns true if a number is odd and false if a 
   number is even. Your function should take in an integer num and return a boolean.

	
	

	









	
5. Write a function that calculates and returns the average of ages. 
   You are not allowed to use python's built-in sum() function.
   Your function should take in the list ages as a parameter and return 
   the average.

	ages = [20, 21, 20, 22, 19, 18, 14, 35]
   
   
   
   
   
   
   
   
   
   
   
   
   
6. Given a function get_height that computes the height of the student 
   passed in, write a new function max_height that finds the maximum 
   height of all the people in the class. Your function should take in
   a list of student names and return the maximum height. You can 
   assume height is in inches and that the list of all students in the
   class is class_lst. 

   get_height(‘nicholas’) will return 75
	

	
	
	
	

	
	
	


	
	
	
	
   What is the type of max_height(students)?

   Suppose the code was modified to print max_height instead of 
   return max_height, what would be the type of max_height(students)?