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Breadth-First Search (BFS)

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Nirmal Majhi answered on March 7, 2022 Popularity 10/10 Helpfulness 1/10

answer Breadth-First Search (BFS)

related Breadth First Search

related breadth first search js

related parse error: syntax error, unexpected string content "", expecting "-" or identifier or variable or number

Breadth-First Search (BFS)

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import java.util.*;

public class BreadthFirstSearch {

    public static void main(String[] args) {
        int numVertices = 7;
        List<List<Integer>> graph = new ArrayList<>();

        // Initialize the graph
        for (int i = 0; i < numVertices; i++) {
            graph.add(new ArrayList<>());
        }

        // Add edges
        addEdge(graph, 0, 1);
        addEdge(graph, 0, 2);
        addEdge(graph, 1, 3);
        addEdge(graph, 1, 4);
        addEdge(graph, 2, 5);
        addEdge(graph, 2, 6);

        // Perform BFS traversal
        System.out.println("BFS Traversal:");
        bfs(graph, 0);
    }

    public static void addEdge(List<List<Integer>> graph, int u, int v) {
        graph.get(u).add(v);
        graph.get(v).add(u);
    }

    public static void bfs(List<List<Integer>> graph, int source) {
        int numVertices = graph.size();
        boolean[] visited = new boolean[numVertices];
        Queue<Integer> queue = new LinkedList<>();

        visited[source] = true;
        queue.add(source);

        while (!queue.isEmpty()) {
            int vertex = queue.poll();
            System.out.print(vertex + " ");

            for (int neighbor : graph.get(vertex)) {
                if (!visited[neighbor]) {
                    visited[neighbor] = true;
                    queue.add(neighbor);
                }
            }
        }
    }
}

Popularity 10/10 Helpfulness 1/10 Language java

Source: chat.openai.com

Tags: java search

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Contributed on Jun 20 2023

Nirmal Majhi

0 Answers Avg Quality 2/10

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Breadth First Search

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graph = {
  '5' : ['3','7'],
  '3' : ['2', '4'],
  '7' : ['8'],
  '2' : [],
  '4' : ['8'],
  '8' : []
}

visited = [] # List for visited nodes.
queue = []     #Initialize a queue

def bfs(visited, graph, node): #function for BFS
  visited.append(node)
  queue.append(node)

  while queue:          # Creating loop to visit each node
    m = queue.pop(0) 
    print (m, end = " ") 

    for neighbour in graph[m]:
      if neighbour not in visited:
        visited.append(neighbour)
        queue.append(neighbour)

# Driver Code
print("Following is the Breadth-First Search")
bfs(visited, graph, '5')    # function calling

Popularity 10/10 Helpfulness 2/10 Language python

Source: favtutor.com

Tags: breadth-first-search breadth-first-se

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Contributed on Mar 07 2022

Purple Team

0 Answers Avg Quality 2/10

breadth first search js

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Breadth First Search Simply Takes a Data Tree or Nested Arrays Like testData. It sorts through the data and looks for its key value.

var testData = [[24,2,432,4,213,4,7,124],[12,412,56,4,63,324,6],[5,3,5436,32,345]]

function breadFirstSearch(key){
	for (i = 0; i < testData.length; i++){
		for (x = 0; x < testData[i].length; x++){
			if(testData[i][x] == key){
				console.log("Key Location: "+i+","+x)
			}
		}
	}
}

breadFirstSearch(5)

Popularity 10/10 Helpfulness 1/10 Language javascript

Source: Grepper

Tags: breadth-first-search breadth-first-se

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Contributed on Mar 14 2023

Crispyrice

0 Answers Avg Quality 2/10

parse error: syntax error, unexpected string content "", expecting "-" or identifier or variable or number

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The error message "parse error: syntax error, unexpected string content '', expecting '-' or identifier or variable or number" typically occurs in YAML when the parser encounters an unexpected string while parsing the file. This often indicates a problem with the structure of your YAML document, such as incorrect indentation or an invalid format.

Common Causes and Solutions
Incorrect Indentation: YAML is sensitive to indentation. Ensure that your indentation is consistent (using spaces, not tabs) and correctly aligns with the hierarchy of your data structure.

Example of Incorrect Indentation:

yaml
Copy code
steps:
  - script: echo "Step 1"
    script: echo "Step 2"  # Incorrect indentation
Corrected Example:

yaml
Copy code
steps:
  - script: echo "Step 1"
  - script: echo "Step 2"  # Correctly aligned
Missing Key: Ensure that all keys are properly defined. If you have a string without a preceding key, it will cause a parse error.

Example:

yaml
Copy code
- "This is a string without a key"  # This will cause an error
Corrected Example:

yaml
Copy code
my_strings:
  - "This is a valid string"  # Added a key
Special Characters: If you are using special characters in strings, ensure they are correctly formatted or enclosed in quotes.

Example:

yaml
Copy code
key: "Value with special character: @"
Missing or Extra Characters: Look for any missing colons or commas or any extra characters that may cause confusion in the structure.

Debugging Steps
Use a YAML Validator: Tools like online YAML validators can help you quickly identify syntax errors and suggest corrections.
Check for Quotes: Ensure that quotes around strings are correctly opened and closed.
Simplify Your YAML: If you're unsure where the error lies, try simplifying your YAML file by removing sections until the error disappears, then gradually reintroduce them.
By carefully checking your YAML structure and following these guidelines, you should be able to resolve the parse error and ensure your YAML file is correctly formatted. If you continue to face issues, feel free to share your YAML snippet for more specific guidance!

Popularity 9/10 Helpfulness 1/10 Language whatever

Source: myassignmenthelp.com

Tags: identifier i

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Contributed on Oct 23 2024

Agreeable Ant

0 Answers Avg Quality 2/10

Breadth-First Search (BFS)

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breadth first search js

parse error: syntax error, unexpected string content "", expecting "-" or identifier or variable or number

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