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troubleshooting Question

Dijkstra's Algorithm implementation

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nothing8171 asked on
2 Comments1 Solution3702 ViewsLast Modified:
Hello Experts,

I am having a real dilly of a pickle here with implementing this algorithm.  I understand the basic concept on how it tries to find the shortest path from point a to c with the least amount of weight, but I believe I am coding more than I need to.  

If some one could take a peek and show me what i'm doing wrong I would appreciate it.

Stuff to know:
argument s = =  0
size == 10
adj_matrix[s][u] = sees if points are adjacent
distance[s][u] = tells you the weight of edge
precede[s][u] = suppose to move to previous node

all() = function to test if array contains all correct bools = in this case 'false'

If I didn't make this clear enough let me know and thanks for your help!

void graph::short_path_graph(int s)
      bool * permanent;
      permanent = new bool [size];
      for(int x = 0; x < size; x++)
            permanent[x] = false;
      for(int i = 1; i < size; i++)
            distance[s][i] = INT_MAX;
      distance[s][s] = 0;
            int u = 0;
            int v = 0;
            for(int i = 1; i < size; ++i)
                  for(int y = 0; y < size; y++)
                        if(adj_matrix[s][i] && adj_matrix[s][y])
                              if(distance[s][i] < distance[s][y] && !permanent[s])
                                    v = distance[s][i];
            permanent[v] = true;
            for(u = 0; u < size; ++u)
                        if(distance[s][u] > distance[s][v] + distance[v][u])
                              distance[s][u] = distance[s][v] + distance[v][u];
                              precede[s][u] = v;


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