Test 1 Information and Preparation

• Date: Wed, Feb 12, 2014 IN CLASS
• Duration: 50 minutes
• Cannot use PUTTY
• Material: Chapter 6, Chapter 8 (all material that was covered so far)
• Structure: 2 short questions and 2 program writing questions. Each question is 25 points

Examples:

• What is the output of the following program?
  Answers:
  • Parts I, II: function guess is counting the numbers of integers that are divisible by 3, returns the sum of these integers and their average, and the list of elements that are divisible by 3.
    output for Part I will be: 51 12.75 [3, 9, 12, 27]
    output for Part II will be: -1, -1, []

  • Part III: function something is creating a new list, which consists of indexes of all odd numbers from the parameter list
    output for Part III: print(index_new) prints [0, 1, 4, 5, 6, 7]
    print(my_list) prints original list [3, 9, 10, 12, 1, 7, 5, 27, 14, 18]
    print(odd_list) prints the list of odd numbers from the original list [3, 9, 1, 7, 5, 27]

    this loop
    for i in odd_list:
    my_list.remove(i)
    removes ALL ODD numbers from my_list

    print(my_list) [10, 12, 14, 18]

    Part 4: function word_index creates a new list of indexes. Each entry in this list indicates the location of word in my_list

    :the output: print(index_new) prints [0, 2, 4, 5, 7]

• Write a function that has one parameter - list of integers and returns the average of the elements with the EVEN index

  Solution is HERE

• Write a function that has one parameter - list of integers and returns the number of positive elements, negative elemens and zeros

  Solution is HERE

• Write a function that has two parameters - list of strings and additional word. The function returns the list of indexes that corresponds to all positions of the word in the string. Example: list=['yana', 'dog', 'yana', 'putty', 'yana', 'yana', 'python', 'yana'], word='yana', function will return the following list: [0,2,4,5,7]