DSA · Theory

Types of Graph

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Theory

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Types of Graph

Don’t start Types of Graph with jargon. Start with bus routes. That is the whole point.

Do Types of Graph once by hand. BFS queue / DFS stack. Change one input. Say the new result out loud.

Skip Types of Graph and no visited set → infinite loop shows up in a city map.

Use Types of Graph when bus routes must stay clear. If a simpler DSA step works, use that instead.

If bus routes breaks under Types of Graph, check no visited set → infinite loop first.

Types of Graph is not a lonely heading. Vikram ties it to bus routes.

Viva for Types of Graph — what it is → BFS queue / DFS stack → the mistake (no visited set → infinite loop).

Exam tip

Say Types of Graph in one breath, then BFS queue / DFS stack, then no visited set → infinite loop.

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)

Types of Graph — graphs are often stored as adjacency lists: vertex → list of (neighbor, weight).

Short notes

DefTypes of Graph — Vikram uses it for bus routes in a city map.
RuleTypes of Graph → BFS queue / DFS stack.
RememberTypes of Graph + a dry-run table (a city map).
UseTypes of Graph in a city map (bus routes).
TrapTypes of Graph — no visited set → infinite loop.
ExTypes of Graph → bus routes.

DSA · Theory

Types of Graph

← All stacks

Theory

44/810

Types of Graph

Don’t start Types of Graph with jargon. Start with bus routes. That is the whole point.

Do Types of Graph once by hand. BFS queue / DFS stack. Change one input. Say the new result out loud.

Skip Types of Graph and no visited set → infinite loop shows up in a city map.

Use Types of Graph when bus routes must stay clear. If a simpler DSA step works, use that instead.

If bus routes breaks under Types of Graph, check no visited set → infinite loop first.

Types of Graph is not a lonely heading. Vikram ties it to bus routes.

Viva for Types of Graph — what it is → BFS queue / DFS stack → the mistake (no visited set → infinite loop).

Exam tip

Say Types of Graph in one breath, then BFS queue / DFS stack, then no visited set → infinite loop.

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)

Types of Graph — graphs are often stored as adjacency lists: vertex → list of (neighbor, weight).

Short notes

DefTypes of Graph — Vikram uses it for bus routes in a city map.
RuleTypes of Graph → BFS queue / DFS stack.
RememberTypes of Graph + a dry-run table (a city map).
UseTypes of Graph in a city map (bus routes).
TrapTypes of Graph — no visited set → infinite loop.
ExTypes of Graph → bus routes.

Types of Graph

Example

Short notes

Questions

Types of Graph

Example

Short notes

Questions