The all-nodes shortest paths problem is undoubtedly one of
the most basic problems in algorithmic graph theory. In this paper,
we introduce simple and efficient algorithm for all nodes shortest
paths problem for directed (undirected) graphs. In th
is problem, we
find the shortest path from a given source node to all other nodes in
the graph, in which the shortest path is a path with minimum cost,
i.e., sum of the edge weights.
We proved that the complexity of the proposed algorithm in
this paper depends only on the edges graph, and we show that the
time of implementation of this algorithm is linear time O(m) and
This is considered the best times of the algorithms at all. And
a Comparison between complexity of proposed algorithm and the
famous shortest path algorithms have been made, and the obtained
results have shown that the complexity of the proposed algorithm
is best.
In this paper, we introduce an Effective algorithm to find the
shortest path in Multiple – Source Graph, by choosing the path
between the source and the distance that gives at least the length of
the path down to the sink. This algorithm is based
on the principle
of iteration to access the optimal solution of the shortest-path
problem, Where the algorithm steps are repeated for all the darts in
the Graph. We proved that the time of implementation of the
proposed algorithm in this paper is linear time O(n+L) and This is
considered the best times of the algorithms at all.
In this research we are studying the possibility of contributing in
solving the problem of the Traveling Salesman Problem, which is
a problem of the type NP-hard . And there is still no algorithm
provides us with the Optimal solution to this problem . All the
algorithms used to give solutions which are close to the optimal
one .
As it’s known, The Graph k-Colorability Problem (GCP) is a wellknown
NP-Hard Problem. This problem consists in finding the k
minimum number of colors to paint the vertices of a graph in such a way
that any two adjoined vertices, which are connecte
d by an edge, have
always different colors. In another words how can we color the edges of a
graph in such a way that any two edges joined by a vertex have always
different colors? In this paper we introduce a new effective algorithm for
coloring the edges of the graph. Our proposed algorithm enables us to
achieve a Continuously Edge Coloring (CEC) for a set of known graphs.
