DSA · Theory

Add and Remove Edge in Adjacency List Representation of Graph

Theory

804/810

Add and Remove Edge in Adjacency List Representation of Graph

If you can teach Add and Remove Edge in Adjacency List Representation of Graph using bus routes, you know it. If you only know the heading, you don’t.

For Add and Remove Edge in Adjacency List Representation of Graph, Big-O is in play. Don’t blame it until you have traced bus routes.

Add and Remove Edge in Adjacency List Representation of Graph exists so Isha can keep bus routes correct in a city map.

Add and Remove Edge in Adjacency List Representation of Graph shows up in a city map. Name bus routes, not “a real-world scenario”.

Don’t do this with Add and Remove Edge in Adjacency List Representation of Graph: no visited set → infinite loop. Interviewers spot it in ten seconds.

Add and Remove Edge in Adjacency List Representation of Graph is not a lonely heading. Isha ties it to bus routes.

Viva for Add and Remove Edge in Adjacency List Representation of Graph: what it is → BFS queue / DFS stack → the mistake (no visited set → infinite loop).

Exam tip

Board: bus routes. Dry-run Add and Remove Edge in Adjacency List Representation of Graph. Name the trap: 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)

Add and Remove Edge in Adjacency List Representation of Graph — graphs are often stored as adjacency lists: vertex → list of (neighbor, weight).

Short notes

DefAdd and Remove Edge in Adjacency List Representation of Graph — Isha uses it for bus routes in a city map.
RuleAdd and Remove Edge in Adjacency List Representation of Graph → BFS queue / DFS stack.
RememberAdd and Remove Edge in Adjacency List Representation of Graph + Big-O (a city map).
UseAdd and Remove Edge in Adjacency List Representation of Graph in a city map (bus routes).
TrapAdd and Remove Edge in Adjacency List Representation of Graph — no visited set → infinite loop.
ExAdd and Remove Edge in Adjacency List Representation of Graph → bus routes.

DSA · Theory

Add and Remove Edge in Adjacency List Representation of Graph

← All stacks

Theory

804/810

Add and Remove Edge in Adjacency List Representation of Graph

If you can teach Add and Remove Edge in Adjacency List Representation of Graph using bus routes, you know it. If you only know the heading, you don’t.

For Add and Remove Edge in Adjacency List Representation of Graph, Big-O is in play. Don’t blame it until you have traced bus routes.

Add and Remove Edge in Adjacency List Representation of Graph exists so Isha can keep bus routes correct in a city map.

Add and Remove Edge in Adjacency List Representation of Graph shows up in a city map. Name bus routes, not “a real-world scenario”.

Don’t do this with Add and Remove Edge in Adjacency List Representation of Graph: no visited set → infinite loop. Interviewers spot it in ten seconds.

Add and Remove Edge in Adjacency List Representation of Graph is not a lonely heading. Isha ties it to bus routes.

Viva for Add and Remove Edge in Adjacency List Representation of Graph: what it is → BFS queue / DFS stack → the mistake (no visited set → infinite loop).

Exam tip

Board: bus routes. Dry-run Add and Remove Edge in Adjacency List Representation of Graph. Name the trap: 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)

Add and Remove Edge in Adjacency List Representation of Graph — graphs are often stored as adjacency lists: vertex → list of (neighbor, weight).

Short notes

DefAdd and Remove Edge in Adjacency List Representation of Graph — Isha uses it for bus routes in a city map.
RuleAdd and Remove Edge in Adjacency List Representation of Graph → BFS queue / DFS stack.
RememberAdd and Remove Edge in Adjacency List Representation of Graph + Big-O (a city map).
UseAdd and Remove Edge in Adjacency List Representation of Graph in a city map (bus routes).
TrapAdd and Remove Edge in Adjacency List Representation of Graph — no visited set → infinite loop.
ExAdd and Remove Edge in Adjacency List Representation of Graph → bus routes.

Add and Remove Edge in Adjacency List Representation of Graph

Example

Short notes

Questions

Add and Remove Edge in Adjacency List Representation of Graph

Example

Short notes

Questions