} } adjList[from].push_back(temp); return true; } V is the number of total vertices in the graph, E is the average number of edges per vertex. O(logV + E) O(E+V) O(ElogV) O(logV) O(1) O(V)
} } adjList[from].push_back(temp); return true; } V is the number of total vertices in the graph, E is the average number of edges per vertex. O(logV + E) O(E+V) O(ElogV) O(logV) O(1) O(V)
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
Related questions
Question
struct Neighbors {
VertexT vertex;
WeightT weight;
};
map<VertexT,
What is the worst case time complexity for this version of addEdge?
bool addEdge(VertexT from, VertexT to, WeightT weight) {
if ((adjList.count(from) == 0) && (adjList.count(to) == 0)) {
return false;
}
Neighbors temp;
temp.vertex = to;
temp.weight = weight;
for (auto &e: adjList.at(from)) {
if (e.vertex == to) {
e.weight = weight;
return true;
}
}
adjList[from].push_back(temp);
return true;
}
V is the number of total vertices in the graph, E is the average number of edges per vertex.
O(logV + E) |
||
O(E+V) |
||
O(ElogV) |
||
O(logV) |
||
O(1) |
||
O(V) |
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