Examples with StringBuilder java.lang.StringBuilder used on opensource projects

Example 11 with StringBuilder

use of java.lang.StringBuilder in project Java by TheAlgorithms.

the class Graphs method toString.

/**
 * this gives a list of verticies in the graph and their adjacencies
 *
 * @return returns a string describing this graph
 */
public String toString() {
    StringBuilder sb = new StringBuilder();
    for (Vertex v : verticies) {
        sb.append("Vertex: ");
        sb.append(v.data);
        sb.append("\n");
        sb.append("Adjacent verticies: ");
        for (Vertex v2 : v.adjacentVerticies) {
            sb.append(v2.data);
            sb.append(" ");
        }
        sb.append("\n");
    }
    return sb.toString();
}

Example 12 with StringBuilder

use of java.lang.StringBuilder in project clojure by clojure.

the class LispReader method readToken.

private static String readToken(PushbackReader r, char initch) {
    StringBuilder sb = new StringBuilder();
    sb.append(initch);
    for (; ; ) {
        int ch = read1(r);
        if (ch == -1 || isWhitespace(ch) || isTerminatingMacro(ch)) {
            unread(r, ch);
            return sb.toString();
        }
        sb.append((char) ch);
    }
}

Example 13 with StringBuilder

use of java.lang.StringBuilder in project clojure by clojure.

the class LispReader method readNumber.

private static Object readNumber(PushbackReader r, char initch) {
    StringBuilder sb = new StringBuilder();
    sb.append(initch);
    for (; ; ) {
        int ch = read1(r);
        if (ch == -1 || isWhitespace(ch) || isMacro(ch)) {
            unread(r, ch);
            break;
        }
        sb.append((char) ch);
    }
    String s = sb.toString();
    Object n = matchNumber(s);
    if (n == null)
        throw new NumberFormatException("Invalid number: " + s);
    return n;
}

Example 14 with StringBuilder

use of java.lang.StringBuilder in project clochure by videlalvaro.

the class LispReader method readToken.

private static String readToken(PushbackReader r, char initch) {
    StringBuilder sb = new StringBuilder();
    sb.append(initch);
    for (; ; ) {
        int ch = read1(r);
        if (ch == -1 || isWhitespace(ch) || isTerminatingMacro(ch)) {
            unread(r, ch);
            return sb.toString();
        }
        sb.append((char) ch);
    }
}

Example 15 with StringBuilder

use of java.lang.StringBuilder in project aerosolve by airbnb.

the class DecisionTreeModel method toDot.

/*
   * Returns a debuggable single tree in graphviz DOT format
   */
public String toDot() {
    StringBuilder sb = new StringBuilder();
    sb.append("digraph g {\n");
    sb.append("graph [ rankdir = \"LR\" ]\n");
    for (int i = 0; i < stumps.size(); i++) {
        ModelRecord stump = stumps.get(i);
        if (stump.isSetLeftChild()) {
            sb.append(String.format("\"node%d\" [\n", i));
            double thresh = stump.threshold;
            sb.append(String.format("label = \"<f0> %s:%s | <f1> less than %f | <f2> greater than or equal%f\";\n", stump.featureFamily, stump.featureName, thresh, thresh));
            sb.append("shape = \"record\";\n");
            sb.append("];\n");
        } else {
            sb.append(String.format("\"node%d\" [\n", i));
            if (stump.labelDistribution != null) {
                sb.append(String.format("label = \"<f0> "));
                for (Map.Entry<String, Double> entry : stump.labelDistribution.entrySet()) {
                    sb.append(String.format("%s : %f ", entry.getKey(), entry.getValue()));
                }
                sb.append(" \";\n");
            } else {
                sb.append(String.format("label = \"<f0> Weight %f\";\n", stump.featureWeight));
            }
            sb.append("shape = \"record\";\n");
            sb.append("];\n");
        }
    }
    int count = 0;
    for (int i = 0; i < stumps.size(); i++) {
        ModelRecord stump = stumps.get(i);
        if (stump.isSetLeftChild()) {
            sb.append(String.format("\"node%d\":f1 -> \"node%d\":f0 [ id = %d ];\n", i, stump.leftChild, count));
            count = count + 1;
            sb.append(String.format("\"node%d\":f2 -> \"node%d\":f0 [id = %d];\n", i, stump.rightChild, count));
            count = count + 1;
        }
    }
    sb.append("}\n");
    return sb.toString();
}