String Algorithms - Quiz

Q: Which data structure is commonly used to implement string algorithms?

A. Arrays
B. Linked lists
C. Stacks
D. Tries

Correct Option: D
Explanation:

Answer: d) Tries

Explanation: Tries are commonly used to implement string algorithms, as they allow for efficient searching, insertion, and deletion of strings.

Q: Which algorithm is used to find the lexicographically smallest rotation of a string?

A. Knuth-Morris-Pratt algorithm
B. Burrows-Wheeler transform
C. Suffix array
D. Rabin-Karp algorithm

Correct Option: B
Explanation:

Answer: b) Burrows-Wheeler transform

Explanation: The Burrows-Wheeler transform is used to find the lexicographically smallest rotation of a string.

Q: Which of the following is not a common problem in string algorithms?

A. Pattern matching
B. Text compression
C. Edit distance
D. Sorting

Correct Option: D
Explanation:

Answer: d) Sorting

Explanation: Sorting is not a common problem in string algorithms.

Q: Which algorithm is used to find the longest repeated substring in a text?

A. Knuth-Morris-Pratt algorithm
B. Boyer-Moore algorithm
C. Longest common subsequence algorithm
D. Longest repeated substring algorithm

Correct Option: D
Explanation:

Answer: d) Longest repeated substring algorithm

Explanation: The Longest repeated substring algorithm is used to find the longest repeated substring in a text.

Q: Which of the following is not a string operation?

A. Concatenation
B. Substring
C. Reversal
D. Sorting

Correct Option: D
Explanation:

Answer: d) Sorting

Explanation: Sorting is not a string operation, but it can be used to compare and manipulate strings.

Q: Which of the following is not a type of string matching algorithm?

A. Exact matching
B. Approximate matching
C. Online matching
D. Batch matching

Correct Option: C
Explanation:

Answer: c) Online matching

Explanation: Online matching is not a type of string matching algorithm.

Q: Which algorithm is used to find all occurrences of a pattern in a text?

A. Knuth-Morris-Pratt algorithm
B. Boyer-Moore algorithm
C. Longest common subsequence algorithm
D. Rabin-Karp algorithm

Correct Option: B
Explanation:

Answer: b) Boyer-Moore algorithm

Explanation: The Boyer-Moore algorithm is used to find all occurrences of a pattern in a text.

Q: Which of the following algorithms is used to find the shortest unique substring of a text?

A. Knuth-Morris-Pratt algorithm
B. Boyer-Moore algorithm
C. Longest common subsequence algorithm
D. Rabin-Karp algorithm

Correct Option: D
Explanation:

Answer: d) Rabin-Karp algorithm

Explanation: The Rabin-Karp algorithm is used to find the shortest unique substring of a text.

Q: Which of the following algorithms is used to find the longest common subsequence of two strings?

A. Knuth-Morris-Pratt algorithm
B. Boyer-Moore algorithm
C. Longest common subsequence algorithm
D. Rabin-Karp algorithm

Correct Option: C
Explanation:

Answer: c) Longest common subsequence algorithm

Explanation: The Longest common subsequence algorithm is used to find the longest common subsequence of two strings.

Q: Which of the following is not a technique used in string algorithms?

A. Dynamic programming
B. Divide and conquer
C. Greedy algorithms
D. Breadth-first search

Correct Option: D
Explanation:

Answer: d) Breadth-first search

Explanation: Breadth-first search is not commonly used in string algorithms.