Homework Answers
(1) positive weights [ Dijkstra's algorithm doesn't work for negative weights ]
(2) All are correct [ in Tree there won't be any multiple connections to a single node ]
(3) It is using a secondary hash function for the probing scheme used in open addressing
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Question 22 Which of the following is a requirement for Dijkstra's algorithm Positive weights The graph...
#include <iostream> #include <queue> using namespace std; class Graph { public: Graph(int n); ~Graph(); void addEdge(int...
#include <iostream>
#include <queue>
using namespace std;
class Graph {
public:
Graph(int n);
~Graph();
void addEdge(int src, int tar);
void BFTraversal();
void DFTraversal();
void printVertices();
void printEdges();
private:
int vertexCount;
int edgeCount;
bool** adjMat;
void BFS(int n, bool marked[]);
void DFS(int n, bool marked[]);
};
Graph::Graph(int n=0) {
vertexCount = n;
edgeCount = 0;
if(n == 0)
adjMat = 0;
else {
adjMat = new bool* [n];
for(int i=0; i < n; i++)
adjMat[i] = new bool [n];
for(int i=0;...
from collections import defaultdict # This class represents a directed graph using # adjacency list...
from collections import defaultdict # This class represents a directed graph using # adjacency list representation class Graph: # Constructor def __init__(self): # default dictionary to store graph self.graph = defaultdict(list) # function to add an edge to graph def addEdge(self,u,v): self.graph[u].append(v) # Function to print a BFS of graph def BFS(self, s): # Mark all the vertices as not visited visited = [False] * (len(self.graph)) # Create a queue for BFS queue...
4. Hashing and Hash Tables. You need to use the ASCII table in the last page for this question. Study the following hash functions for ASCII C strings that are at least 3-char long unsigned hash1(con...
4. Hashing and Hash Tables. You need to use the ASCII table in the last page for this question. Study the following hash functions for ASCII C strings that are at least 3-char long unsigned hash1(const char, unsigned unsigned vto]+01997 return (v % m); unsigned hash2Cconst char unsigned) unsigned v-o]k(2] 877 return 1 + (v % ( -1)); (a) Given that m-, 7, compute the hash values and fill the following table (3%) String k hash1k, ) hash2(k, 7) aph...
/* Graph read from file, and represnted as adjacency list. To implement DFS and BFS on...
/* Graph read from file, and represnted as adjacency list.
To implement DFS and BFS on the graph
*/
#include <iostream>
#include <sstream>
#include <fstream>
#include <vector>
#include <utility>
#include <unordered_map>
#include <set>
#include <queue>
using namespace std;
// Each vertex has an integer id.
typedef vector<vector<pair<int,int>>> adjlist; //
Pair: (head vertex, edge weight)
adjlist makeGraph(ifstream& ifs);
void printGraph(const adjlist& alist);
vector<int> BFS(const adjlist& alist, int source); //
Return vertices in BFS order
vector<int> DFS(const adjlist& alist, int source); //...
Question 6 Let G be the weighted graph (a) Use Dijkstra's algorithm to find the shortest path from A to F. You can...
Question 6 Let G be the weighted graph (a) Use Dijkstra's algorithm to find the shortest path from A to F. You can do all the work on a single diagram, but, to show that you have used the algorithm correctly, if an annotation needs updating do not erase itjust put a line through it and write the new annotation above that b) In what order are the vertices added to the tree? (c) Notice that the algorithm does not,...
Using the following graph and Dijkstra's algorithm, calculate the shortest distance to each other vertex starting...
Using the following graph and Dijkstra's algorithm, calculate the shortest distance to each other vertex starting from vertex A. Label all vertices with the total distance (from A). Indicate the order nodes are added to cloud. Draw a Minimum Spanning Tree for the graph. You should label all nodes in the tree, but you do not need to indicate edge weights or total distance. 2 D C L 7 6 2 7 2 A K B 4 7 4 1...
Question 5 (5 points) Apply Dijkstra's Algorithm to the following graph, computing the shortest path for...
Question 5 (5 points) Apply Dijkstra's Algorithm to the following graph, computing the shortest path for al vertices from vertex A. Present the results after each vertex has been processed 3 20 B 47 20 You may wish to present the results in the format of the following table: Stage Current Vertex Labels and Distances A 0 A 0 D 231 A 213 E 4 F21 A 90 Each row states (a) the current stage, (b) the vertex just added...
Creating a simple graph in C++; need solution ASAP. EDIT: Pls comment letting me know what...
Creating a simple graph in C++; need solution ASAP. EDIT: Pls comment letting me know what other information you need rather than just "..." Thank you. Here is the assignment: In this final practice problem, you’ll: read a set of data representing a directed, unweighted graph build an in-memory graph structure using the data display the graph using depth-first traversal display the graph using breadth-first traversal Input data - The data consists of records like this: 16 3 15 4...
Algorithm Question 5. Below is a graph with edge lengths. Apply Dijkstra's algorithm to find the shortest paths, starting at vertex A, to all other vertices. Write down the sequence in which the...
Algorithm Question
5. Below is a graph with edge lengths. Apply Dijkstra's algorithm to find the shortest paths, starting at vertex A, to all other vertices. Write down the sequence in which the edges are chosen, breaking ties by using vertices at the same length in alphabetic orde. 3 Ga 2
5. Below is a graph with edge lengths. Apply Dijkstra's algorithm to find the shortest paths, starting at vertex A, to all other vertices. Write down the sequence in...
Using the Red-Black Tree applet, you input the following numbers into the Red-Black tree, keep all...
Using the Red-Black Tree applet, you input the following numbers into the Red-Black tree, keep all red-black rules (on page 433) either using color changes or rotation. The result graph should be height balance and red-black correct. (20 pts) Attach your results of screen shots for every question. Insert 50, 70, 20, 90 Insert 50, 70, 20, 90, 99 Insert 50, 70, 20, 90, 80 Insert 50, 70, 20, 80, 60, 90, 75, 95 Insert 50, 70, 20, 90, 60,...
#include <iostream>
#include <queue>
using namespace std;
class Graph {
public:
Graph(int n);
~Graph();
void addEdge(int src, int tar);
void BFTraversal();
void DFTraversal();
void printVertices();
void printEdges();
private:
int vertexCount;
int edgeCount;
bool** adjMat;
void BFS(int n, bool marked[]);
void DFS(int n, bool marked[]);
};
Graph::Graph(int n=0) {
vertexCount = n;
edgeCount = 0;
if(n == 0)
adjMat = 0;
else {
adjMat = new bool* [n];
for(int i=0; i < n; i++)
adjMat[i] = new bool [n];
for(int i=0;...
4. Hashing and Hash Tables. You need to use the ASCII table in the last page for this question. Study the following hash functions for ASCII C strings that are at least 3-char long unsigned hash1(const char, unsigned unsigned vto]+01997 return (v % m); unsigned hash2Cconst char unsigned) unsigned v-o]k(2] 877 return 1 + (v % ( -1)); (a) Given that m-, 7, compute the hash values and fill the following table (3%) String k hash1k, ) hash2(k, 7) aph...
/* Graph read from file, and represnted as adjacency list.
To implement DFS and BFS on the graph
*/
#include <iostream>
#include <sstream>
#include <fstream>
#include <vector>
#include <utility>
#include <unordered_map>
#include <set>
#include <queue>
using namespace std;
// Each vertex has an integer id.
typedef vector<vector<pair<int,int>>> adjlist; //
Pair: (head vertex, edge weight)
adjlist makeGraph(ifstream& ifs);
void printGraph(const adjlist& alist);
vector<int> BFS(const adjlist& alist, int source); //
Return vertices in BFS order
vector<int> DFS(const adjlist& alist, int source); //...
Question 6 Let G be the weighted graph (a) Use Dijkstra's algorithm to find the shortest path from A to F. You can do all the work on a single diagram, but, to show that you have used the algorithm correctly, if an annotation needs updating do not erase itjust put a line through it and write the new annotation above that b) In what order are the vertices added to the tree? (c) Notice that the algorithm does not,...
Using the following graph and Dijkstra's algorithm, calculate the shortest distance to each other vertex starting from vertex A. Label all vertices with the total distance (from A). Indicate the order nodes are added to cloud. Draw a Minimum Spanning Tree for the graph. You should label all nodes in the tree, but you do not need to indicate edge weights or total distance. 2 D C L 7 6 2 7 2 A K B 4 7 4 1...
Question 5 (5 points) Apply Dijkstra's Algorithm to the following graph, computing the shortest path for al vertices from vertex A. Present the results after each vertex has been processed 3 20 B 47 20 You may wish to present the results in the format of the following table: Stage Current Vertex Labels and Distances A 0 A 0 D 231 A 213 E 4 F21 A 90 Each row states (a) the current stage, (b) the vertex just added...
Algorithm Question
5. Below is a graph with edge lengths. Apply Dijkstra's algorithm to find the shortest paths, starting at vertex A, to all other vertices. Write down the sequence in which the edges are chosen, breaking ties by using vertices at the same length in alphabetic orde. 3 Ga 2
5. Below is a graph with edge lengths. Apply Dijkstra's algorithm to find the shortest paths, starting at vertex A, to all other vertices. Write down the sequence in...
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