Prim's Algorithm — DSA Technical Interview Questions & Answers

Prim's Algorithm

Prim's Algorithm

  • Prim's Algorithm is a DSA topic. In plain words you use it for a short Prim's Algorithm example in a short dry-run on paper. Don’t start with a slogan — start with that picture.
  • Smallest example: the smallest Prim's Algorithm example you can type. Type it, run it, and say what you see. If you can do that from memory, you know Prim's Algorithm.
  • From the example next to this theory: Prim's Algorithm — graphs are often stored as adjacency lists: vertex → list of (neighbor, weight).
  • Trap: only saying “Prim's Algorithm” with no example. Fix that before you talk about advanced DSA.
  • Viva: what is Prim's Algorithm? Then show the smallest Prim's Algorithm example you can type. Then name the trap.

Technical Interview Tip: What is Prim's Algorithm? Show this: the smallest Prim's Algorithm example you can type. Trap: only saying “Prim's Algorithm” with no example.

Code Examples for Prim's Algorithm

Prim's Algorithm — working example

# adjacency list
graph = {
    "A": [("B", 2), ("C", 5)],
    "B": [("A", 2), ("C", 1)],
    "C": [("A", 5), ("B", 1)],
}
for u, edges in graph.items():
    print(u, "->", edges)

Prim's Algorithm — graphs are often stored as adjacency lists: vertex → list of (neighbor, weight).

How to Explain Prim's Algorithm to an Interviewer

What is Prim's Algorithm?

Used for a short Prim's Algorithm example a short dry-run on paper Not just the heading

Give one small example of Prim's Algorithm.

the smallest Prim's Algorithm example you can type Prim's Algorithm — graphs are often stored as adjacency lists: vertex → list of (neighbor, weight)

What mistake do beginners make with Prim's Algorithm?

only saying “Prim's Algorithm” with no example Show the fix

Where do you use Prim's Algorithm?

a short dry-run on paper a short Prim's Algorithm example