
DSA (QUIZ 7) -Greedy Algorithms and Complexity Analysis
Authored by Ma Gonzales
Information Technology (IT)
University
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15 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the key principle of a greedy algorithm?
Explore all possible combinations
Always pick the global optimum
Make the best local choice at each step
Use recursion to reduce steps
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following problems can be solved optimally using a greedy algorithm?
0/1 Knapsack
Activity Selection
Traveling Salesman
Longest Common Subsequence
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the greedy choice in the Coin Change Problem using denominations of 1, 5, and 10 to make 27?
Use only 1s
Use only 5s
Use as many 10s, then 5s, then 1s
Use 3 × 9 coins
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why does the Huffman coding algorithm follow the greedy approach?
It picks the longest string first
It chooses the lowest frequency characters first
It tries all possible encodings
It encodes based on the alphabet
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a common feature of problems that work well with greedy algorithms?
The problem requires backtracking
The solution must be recursive
The problem has an optimal substructure
It needs matrix multiplication
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the time complexity of a function that runs a single loop over a list of `n` elements?
O(1)
O(n)
O(log n)
O(n²)
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which time complexity grows the fastest as input size increases?
O(n)
O(log n)
O(n log n)
O(2n)
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