MCQ Collection
Data Structures 300 Unique MCQs
Practice Data Structures 300 Unique questions with answers and explanations.
Choose an option to check your answer.
A.
Depth-First Search
B.
Binary Search Tree
C.
Adjacency List
D.
Directed Graph
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Correct Answer: D. Directed Graph
Explanation:
Directed Graph fits because it supports modeling one-way relationships and an edge from u to v need not imply an edge from v to u.
Both clues point to this choice.
Choose an option to check your answer.
A.
Graph
B.
Perfect Binary Tree
C.
Bubble Sort
D.
Union by Rank
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Correct Answer: A. Graph
Explanation:
Graph is a set of vertices connected by edges.
This description distinguishes it from the other choices.
Choose an option to check your answer.
A.
cycle detection, topological reasoning, and connectivity
B.
modeling networks, routes, and relationships
C.
teaching basic sorting mechanics
D.
memory-constrained processing
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Correct Answer: B. modeling networks, routes, and relationships
Explanation:
Graph is commonly used for modeling networks, routes, and relationships.
Its design supports this task efficiently or naturally.
Choose an option to check your answer.
A.
its subtrees do not become excessively skewed
B.
false positives are possible but false negatives are not under normal operation
C.
edges may be directed or undirected
D.
cycles can prevent unreachable objects from being reclaimed
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Correct Answer: C. edges may be directed or undirected
Explanation:
The defining property is that edges may be directed or undirected.
The other statements describe different structures or concepts.
Choose an option to check your answer.
A.
Min-Heap
B.
Quadratic Probing
C.
Stack
D.
Graph
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Correct Answer: D. Graph
Explanation:
Graph fits because it supports modeling networks, routes, and relationships and edges may be directed or undirected.
Both clues point to this choice.
Choose an option to check your answer.
A.
Directed Graph
B.
Bubble Sort
C.
Array
D.
Amortized Analysis
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Correct Answer: A. Directed Graph
Explanation:
Directed Graph is a graph whose edges have orientation.
This description distinguishes it from the other choices.
Choose an option to check your answer.
A.
describing both upper and lower growth rates
B.
modeling one-way relationships
C.
repeatedly retrieving the largest element
D.
prefix sums with updates
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Correct Answer: B. modeling one-way relationships
Explanation:
Directed Graph is commonly used for modeling one-way relationships.
Its design supports this task efficiently or naturally.
Choose an option to check your answer.
A.
after each full pass, an extreme element reaches its final region
B.
both front and rear operations can be efficient
C.
an edge from u to v need not imply an edge from v to u
D.
its main operations are find and union
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Correct Answer: C. an edge from u to v need not imply an edge from v to u
Explanation:
The defining property is that an edge from u to v need not imply an edge from v to u.
The other statements describe different structures or concepts.
Choose an option to check your answer.
A.
Quadratic Probing
B.
Hash Table
C.
Max-Heap
D.
Merge Sort
Show Answer
Correct Answer: A. Quadratic Probing
Explanation:
Quadratic Probing is an open-addressing method that uses quadratic offsets while probing.
This description distinguishes it from the other choices.
Choose an option to check your answer.
A.
keeping union-find trees short
B.
reducing primary clustering compared with linear probing
C.
shortest paths in unweighted graphs
D.
hash tables with flexible load factors
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Correct Answer: B. reducing primary clustering compared with linear probing
Explanation:
Quadratic Probing is commonly used for reducing primary clustering compared with linear probing.
Its design supports this task efficiently or naturally.
Choose an option to check your answer.
A.
collisions must be handled when keys map to the same position
B.
each node stores two links
C.
the probe gaps grow quadratically
D.
the minimum element is stored at the root
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Correct Answer: C. the probe gaps grow quadratically
Explanation:
The defining property is that the probe gaps grow quadratically.
The other statements describe different structures or concepts.
Choose an option to check your answer.
A.
Suffix Array
B.
Disjoint Set Union
C.
Undirected Graph
D.
Quadratic Probing
Show Answer
Correct Answer: D. Quadratic Probing
Explanation:
Quadratic Probing fits because it supports reducing primary clustering compared with linear probing and the probe gaps grow quadratically.
Both clues point to this choice.