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Restoring Shortest Path

BFS searching shortest path

That was hard! But now let's implement a method to find the shortest path between two vertices, not only length.

To do that, you have to know for each node where did it come from. So, let's add list pred that contains predcessor for i node. At the beginning, pred contains only -1.

Opgave

Swipe to start coding

Modify bfs(start, end) so it returns a list of vertices between start and end nodes (both inclusive). If there is no path, return an empty list.

Do not forget to keep the path.

Switch to desktopSkift til skrivebord for at øve i den virkelige verdenFortsæt der, hvor du er, med en af nedenstående muligheder
Var alt klart?

Hvordan kan vi forbedre det?

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Sektion 2. Kapitel 4

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book
Restoring Shortest Path

BFS searching shortest path

That was hard! But now let's implement a method to find the shortest path between two vertices, not only length.

To do that, you have to know for each node where did it come from. So, let's add list pred that contains predcessor for i node. At the beginning, pred contains only -1.

Opgave

Swipe to start coding

Modify bfs(start, end) so it returns a list of vertices between start and end nodes (both inclusive). If there is no path, return an empty list.

Do not forget to keep the path.

Switch to desktopSkift til skrivebord for at øve i den virkelige verdenFortsæt der, hvor du er, med en af nedenstående muligheder
Var alt klart?

Hvordan kan vi forbedre det?

Tak for dine kommentarer!

Sektion 2. Kapitel 4
Switch to desktopSkift til skrivebord for at øve i den virkelige verdenFortsæt der, hvor du er, med en af nedenstående muligheder
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