// return a string representation
public String toString() {
String s = "";
for (int i : st.keys()) {
s += "(" + i + ", " + st.get(i) + ") ";
}
return s;
}
public SymbolGraph(String filename, String delimiter) {
st = new ST<String, Integer>();
// First pass builds the index by reading strings to associate
// distinct strings with an index
In in = new In(filename);
while (in.hasNextLine()) {
String[] a = in.readLine().split(delimiter);
for (int i = 0; i < a.length; i++) {
if (!st.contains(a[i])) st.put(a[i], st.size());
}
}
// inverted index to get string keys in an aray
keys = new String[st.size()];
for (String name : st.keys()) {
keys[st.get(name)] = name;
}
// second pass builds the graph by connecting first vertex on each
// line to all others
G = new Graph(st.size());
in = new In(filename);
while (in.hasNextLine()) {
String[] a = in.readLine().split(delimiter);
int v = st.get(a[0]);
for (int i = 1; i < a.length; i++) {
int w = st.get(a[i]);
G.addEdge(v, w);
}
}
}
public Iterable<String> teams() // all teams
{
return teamID.keys();
}
// return the dot product of this vector and that array
public double dot(double[] that) {
double sum = 0.0;
for (int i : st.keys()) sum += that[i] * this.get(i);
return sum;
}