section 8: algorithms - intro to computing
B. There is an efficient algorithm for all other NP-complete problems
Which is true if an efficient solution for one NP-complete problem is found? A. The algorithm has exponential runtime B. There is an efficient algorithm for all other NP-complete problems C. Other NP-complete problems are not affected, and don't have efficient algorithms D. The algorithm is incorrect because solving an NP-complete problem is impossible
D. Orange, Peach, Pear, Plum, Tomato
Which list can be searched using binary search? A. Apple, Carrot, Grape, Cucumber, Orange B. Carrot, Banana, Watermelon, Lemon, Lime C. Peach, Nectarine, Plum, Apple D. Orange, Peach, Pear, Plum, Tomato
D. Tupac, Nas, Jay-Z, Eminem, Biggie
Which list is sorted in descending order? A. Biggie, Eminem, Jay-Z, Nas, Tupac B. Tupac, Biggie, Eminem, Jay-Z, Nas C. Tupac, Jay-Z, Nas, Eminem, Biggie D. Tupac, Nas, Jay-Z, Eminem, Biggie
C. Selecting C for every answer
Which describes a heuristic algorithm for taking a multiple-choice exam? A. Answering each question carefully B. Not answering any questions C. Selecting C for every answer D. Not taking the exam
D. Selecting "D. All the above" if it is an option, otherwise selecting C
Which describes an optimized heuristic algorithm for taking a multiple-choice exam? A. Answering each question carefully B. Answer only one question C. Selecting B for every answer D. Selecting "D. All the above" if it is an option, otherwise selecting C
A. Milk and Juice
Which elements need to be swapped to sort the array [Coffee, Milk, Juice, Soda, Tea] in ascending order? A. Milk and Juice B. Milk and Soda C. Coffee and Juice D. Soda and Tea
C. Array of all words / String value for the longest word
Consider the problem of determining the longest word in a list of words with various lengths. What is the problem input / output? A. String value for the longest word / Integer value for the number of words B. String value for the longest word / Array of all words C. Array of all words / String value for the longest word D. Integer value for the number of words / String value for the longest word
A. Finding 18 using linear search
If a list has elements [18, 20, 37, 79, 93], which of the following is the fastest search? A. Finding 18 using linear search B. Finding 18 using binary search C. Finding 93 using linear search D. Finding 93 using binary search
C. 8 µs
If each comparison takes 1 µs (1 microsecond), what is the binary search algorithm's runtime for a list with 128 elements? A. 6 µs B. 7 µs C. 8 µs D. 9 µs
B. 5 seconds
If searching a sock drawer for a matching sock takes at most 5 comparisons, and if each comparison takes 1 second, what is the longest possible runtime for linear search? A. 1 second B. 5 seconds C. 10 seconds D. 25 seconds
B. Short runtime and low memory usage
Which algorithm, based on runtime and memory resources, is the most efficient? A. Short runtime and high memory usage B. Short runtime and low memory usage C. Long runtime and high memory usage D. Long runtime and low memory usage
C. Worst case
The following function returns the first value in a list that is greater than the specified value. If the specified value is 79 and the list is [20, 37, 19, 79, 42, 66, 18], which describes the runtime complexity? A. Best case B. Neither best case nor worst case C. Worst case D. Best and worst case are the same
C. 1 minute
What is the maximum time a linear search algorithm takes if the list has 60,000,000 elements and each comparison takes 1 µs (1 microsecond)? A. 6 microseconds B. 6 seconds C. 1 minute D. 6 minutes
C. S(N) = N + 3
What is the space complexity of the following code, where the list size is 5? A. S(N) = 3 B. S(N) = 5 C. S(N) = N + 3 D. S(N) = N + 5
A. Binary search
Which common algorithm should be used to quickly find Pizza Hut in the phone book? A. Binary search B. Linear search C. Longest common substring D. Shortest path algorithm
