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Apprendre Breadth First Traverse | Practice
Breadth First Search
course content

Contenu du cours

Breadth First Search

Breadth First Search

1. What is BFS
2. Practice
3. Improve Your Code
4. Solving the Problems using BFS

book
Breadth First Traverse

The goal of this task is to create method BFT (Breadth First Traverse) to demonstrate the traverse. Consider that this method works only for some components, and the argument is the starting node. To keep track, you need to use a queue to push() and pop() objects. Here, you can use list for this and methods append() and pop(0).

When you traverse the graph, push nodes to the queue, that haven’t been visited yet. Thus, you need to track it in the visited array, which contains True, if node i is already visited, or False, if not.

Here is a BFS example again:

Tâche

Swipe to start coding

Algorithm is next:

  1. Push start vertex to queue and label it as visited in visited array

  2. if the queue is not empty, go to the step 3. Else leave the function.

  3. Get the current node from queue, and push to the queue all unvisited neighbors. Label them as visited.

  4. Output which node you add and content of the queue on each step to demonstrate how it works.

Solution

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Section 2. Chapitre 1
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book
Breadth First Traverse

The goal of this task is to create method BFT (Breadth First Traverse) to demonstrate the traverse. Consider that this method works only for some components, and the argument is the starting node. To keep track, you need to use a queue to push() and pop() objects. Here, you can use list for this and methods append() and pop(0).

When you traverse the graph, push nodes to the queue, that haven’t been visited yet. Thus, you need to track it in the visited array, which contains True, if node i is already visited, or False, if not.

Here is a BFS example again:

Tâche

Swipe to start coding

Algorithm is next:

  1. Push start vertex to queue and label it as visited in visited array

  2. if the queue is not empty, go to the step 3. Else leave the function.

  3. Get the current node from queue, and push to the queue all unvisited neighbors. Label them as visited.

  4. Output which node you add and content of the queue on each step to demonstrate how it works.

Solution

Switch to desktopPassez à un bureau pour une pratique réelleContinuez d'où vous êtes en utilisant l'une des options ci-dessous
Tout était clair ?

Comment pouvons-nous l'améliorer ?

Merci pour vos commentaires !

Section 2. Chapitre 1
Switch to desktopPassez à un bureau pour une pratique réelleContinuez d'où vous êtes en utilisant l'une des options ci-dessous
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