Data Structure

Greedy Algorithms

⛪ Computer Science and Engineering > Data Structure

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Q 1: What is the main idea behind a greedy algorithm?

  • A Solving a problem by breaking it down into smaller subproblems
  • B Generating all possible solutions and selecting the best one
  • C Repeating the same steps over and over until a solution is found
  • D Making the locally optimal choice at each step to obtain a globally optimal solution

Q 2: Which of the following is an example of a problem that can be solved using a greedy algorithm?

  • A Finding the shortest path between two nodes in a graph
  • B Computing the greatest common divisor of two numbers
  • C Sorting a list of integers
  • D The coin change problem

Q 3: What is the time complexity of the greedy algorithm for the coin change problem?

  • A O(n)
  • B O(n log n)
  • C O(n^2)
  • D O(log n)

Q 4: Which of the following is a disadvantage of a greedy algorithm?

  • A It always guarantees the optimal solution
  • B It can be slow for large input sizes
  • C It requires a lot of memory
  • D It may not always find the globally optimal solution

Q 5: What is the main idea behind the Huffman coding algorithm?

  • A Making the locally optimal choice at each step to obtain a globally optimal solution
  • B Breaking a problem down into smaller subproblems
  • C Generating all possible solutions and selecting the best one
  • D Searching for a solution by gradually eliminating possibilities

Q 6: What is the time complexity of the Huffman coding algorithm?

  • A O(n)
  • B O(n log n)
  • C O(n^2)
  • D O(log n)

Q 7: Which of the following is a disadvantage of the Huffman coding algorithm?

  • A It always guarantees the optimal solution
  • B It can be slow for large input sizes
  • C It requires a lot of memory
  • D It may not always find the globally optimal solution

Q 8: Which of the following is an example of a problem that cannot be solved using a greedy algorithm?

  • A Finding the shortest path between two nodes in a graph
  • B Computing the greatest common divisor of two numbers
  • C Sorting a list of integers
  • D The traveling salesman problem

Q 9: Which of the following is an example of a problem that can be solved using a greedy algorithm with a proof of optimality?

  • A The knapsack problem
  • B The minimum spanning tree problem
  • C The job scheduling problem
  • D The longest common subsequence problem

Q 10: What is the main idea behind the interval scheduling problem?

  • A Selecting a subset of intervals that do not overlap
  • B Sorting the intervals by start time and selecting the earliest start time
  • C Sorting the intervals by end time and selecting the earliest end time
  • D Generating all possible subsets of intervals and selecting the one with the most intervals