Purdue CNIT 155 Final Exam (Python) ACTUAL QUESTIONS AND CORRECT ANSWERS

CNIT 155 FInal (Purdue) ACTUAL
QUESTIONS AND CORRECT ANSWERS
Two Ways to Create an Empty List: - Correct answers✔✔list1 = [ ]

list1 = list ()



How to Create a List? - Correct answers✔✔Put a sequence of items in [ ]



Ex. colors = ["red", "yellow", "blue"]



Reading 10 Values from a User then Finding the Minimum - Correct answers✔✔values = [ ]

for i in range (0, 10):

v1 = int(input("Enter a value"));

values.append(v1);



print(values)

print(min(values))



Three Methods of Adding Elements to a List - Correct answers✔✔list1.append(elem)

(adds a single element to the end of the list)



list1.insert(index,elem)

(inserts the elem at the given index, shifting elements to the right)



list1.extend(list2)

, (adds the elements in list2 to the end of the list)



Access an Individual Element in a List Using an Index - Correct answers✔✔list1[index]



Positive Indexes - Correct answers✔✔- First element in the list has index 0

- Second element has index 1

-n'th element is n-1



Negative Indexes - Correct answers✔✔- Index -1 identifies the last element

- -2 identifies the next to last element, etc.



Built-In List Functions in Python - Correct answers✔✔function - description

len - returns the number of items in the list

min - returns the min among the elements in the list

max - returns the max among the elements in the list

sum - returns the sum of all elements in the list



Shuffle Function - Correct answers✔✔from random import shuffle

shuffle(list1)



How to Call Methods Provided by a List - Correct answers✔✔list.methodName(arguments)



Traversing a List - Correct answers✔✔for index in range (len(scores)):

print (index, "\t" , grade[i])