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# Data Structures | Heap | Question 9

Which data structure is commonly used to implement the navigation system in a mapping application, helping users find the shortest route between locations?

(A)

Heap

(B)

Graph

(C)

Stack

(D)

Queue

Explanation:

The data structure commonly used to implement the navigation system in a mapping application, helping users find the shortest route between locations, is a graph.

Here’s the justification for why the other options are not the correct choices:

a) Heap: A heap is a binary tree-based data structure commonly used for efficient retrieval of the minimum or maximum element. While heaps can be used in certain scenarios for optimizing certain operations in graph algorithms, they are not the primary data structure used for representing and solving the navigation problem in a mapping application.

c) Queue: A queue is a data structure that follows the First-In-First-Out (FIFO) principle and is useful for maintaining the order of elements. While a queue may be involved in certain algorithms or processes related to navigation, it is not the primary data structure used to represent the map and solve the shortest route problem. The navigation problem typically involves finding the shortest path between locations, which is best modeled and solved using a graph.

d) Stack: A stack is a data structure that follows the Last-In-First-Out (LIFO) principle. Stacks are not commonly used for representing and solving the navigation problem in a mapping application. The navigation problem usually requires finding the shortest route, which is better handled by a graph-based data structure that supports efficient pathfinding algorithms.

In summary, a graph is the most suitable data structure for implementing the navigation system in a mapping application. Graphs allow the representation of locations as nodes and the connections between them as edges, enabling efficient algorithms such as Dijkstra’s algorithm or A* search to find the shortest route between locations.

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