public static void main(String[] args) throws NumberFormatException, IOException {
// Questao 01
System.out.println("Questao 01");
System.out.println("--------------------------------");
Grafo grafo = new LeitorDeArquivo("src/main/resources/exemploQuestao01.txt").ler();
FloydWarshall floydWarshall = new FloydWarshall(grafo);
floydWarshall.computar();
System.out.println("--------------------------------");
// Questao 02
System.out.println("Questao 02");
grafo = new LeitorDeArquivo("src/main/resources/matrizQuestao02.txt").ler();
Kruskal kruskal = new Kruskal(grafo);
kruskal.executar();
System.out.println("--------------------------------");
// Questao 03
System.out.println("Questao 03");
grafo = new LeitorDeArquivo("src/main/resources/exemploMatriz.txt").ler();
BellmanFord bellmanFord = new BellmanFord(grafo, 0);
bellmanFord.computar();
System.out.println("Tem ciclos negativos? " + bellmanFord.temCiclosNegativos());
}
public static void main(String args[]) {
try {
/*Please copy the test content into the file and unmark the line below to test the corresponding algorithm*/
FileInputStream fstream = new FileInputStream("src/input_file/correlator.txt");
/*----------------------------------------------------------------------------------*/
// Get the object of DataInputStream
DataInputStream in = new DataInputStream(fstream);
BufferedReader br = new BufferedReader(new InputStreamReader(in));
String strLine;
int vertexNum = 0;
int i = 0;
int numOfRows = 0;
String fileName = "";
String[] anArray = new String[100];
String[] originalFile = new String[100];
String[] arrayString;
int[] vertexWeight = new int[500];
String vertexWeightString;
int lineOfG = 0;
int lineOfE = 0;
int flag = 1;
while ((strLine = br.readLine()) != null) {
// Print the content on the console
String original = strLine;
String noSpaceString = strLine.replaceAll(" ", "");
noSpaceString = noSpaceString.replaceAll("\t", "");
if (noSpaceString.indexOf("#") != -1) {
int indexOfSharp = noSpaceString.indexOf("#");
noSpaceString = noSpaceString.substring(0, indexOfSharp);
}
if (noSpaceString.indexOf(".name") != -1) {
int fileNameLength = noSpaceString.length();
fileName = noSpaceString.substring(5, fileNameLength);
} else if (noSpaceString.indexOf(".n") != -1) {
String vertexNumString = noSpaceString.substring(2);
vertexNum = string2int(vertexNumString);
} else if (noSpaceString.indexOf(".d") != -1) {
arrayString = new String[vertexNum];
String tryString = original.substring(2);
char[] tryCharArray = tryString.toCharArray();
int indexLast;
int t = 0;
for (int c = 0; c < vertexNum; c++) {
while (tryCharArray[1] == 32) {
tryString = tryString.substring(1);
tryCharArray = tryString.toCharArray();
}
if (c != vertexNum - 1) {
indexLast = tryString.indexOf(32, 1);
arrayString[t] = tryString.substring(1, indexLast);
t++;
tryString = tryString.substring(indexLast);
tryCharArray = tryString.toCharArray();
indexLast = 0;
} else {
if (tryString.indexOf(32, 1) == -1) {
indexLast = tryString.length();
arrayString[t] = tryString.substring(1, indexLast);
} else {
indexLast = tryString.indexOf(32, 1);
arrayString[t] = tryString.substring(1, indexLast);
}
}
}
for (int j = 0; j < vertexNum; j++) {
vertexWeight[j] = string2int(arrayString[j]);
}
}
if (noSpaceString.indexOf(".g") != -1) {
lineOfG = numOfRows;
}
if (noSpaceString.indexOf(".g") != -1 || flag == 0) {
anArray[i] = original;
flag = 0;
} else {
anArray[i] = noSpaceString;
}
if (noSpaceString.indexOf(".e") != -1) {
lineOfE = numOfRows;
}
originalFile[i] = original;
i++;
numOfRows++;
}
int numOfEdges = lineOfE - lineOfG - 1;
if (numOfEdges == 0) {
/*----------------------output files with NO edges-----------------------------------*/
/*--------file #1: W and D matrices------------*/
Writer output_1 = null;
String fileNameWD = fileName + "-WD.txt";
File file_1 = new File(fileNameWD);
output_1 = new BufferedWriter(new FileWriter(file_1));
String nextLine = "\r\n";
output_1.write(" W matrix: ");
output_1.write(nextLine);
output_1.write("W ");
for (int z = 0; z < vertexNum + 1; z++) {
output_1.write("v" + z + " ");
}
output_1.write(nextLine);
for (int w = 0; w <= vertexNum; w++) {
String oneLine = " ";
for (int n = 0; n <= vertexNum; n++) {
if (n == 0) {
oneLine = oneLine + "0" + " ";
} else {
oneLine = oneLine + "x" + " ";
}
}
output_1.write("v" + w + oneLine);
output_1.write(nextLine);
}
output_1.write(" D matrix: ");
output_1.write(nextLine);
output_1.write("D ");
for (int z = 0; z < vertexNum + 1; z++) {
output_1.write("v" + z + " ");
}
output_1.write(nextLine);
for (int w = 0; w <= vertexNum; w++) {
String oneLine = " ";
for (int n = 0; n <= vertexNum; n++) {
if (w == n && w == 0) {
oneLine = " 0" + " ";
} else if (w == n && w != 0) {
oneLine = oneLine + vertexWeight[n - 1] + " ";
} else {
oneLine = oneLine + "x" + " ";
}
}
output_1.write("v" + w + oneLine);
output_1.write(nextLine);
}
output_1.close();
System.out.println("\n" + "Your output file #1 - WD matrices has been written");
/*--------------------file #2: opt_phi constraints-------------------*/
Writer output_2 = null;
String fileNameConstraints = fileName + "-constraints.txt";
File file_2 = new File(fileNameConstraints);
output_2 = new BufferedWriter(new FileWriter(file_2));
output_2.write("The following are constraints 9.4: ");
output_2.write(nextLine);
output_2.write(
"r_i - r_j <= "
+ Integer.toString(Integer.MIN_VALUE)
+ " i, j <- [0 "
+ Integer.toString(vertexNum + 1)
+ "]");
output_2.write(nextLine);
output_2.write("The following are constraints 9.5: ");
output_2.write(nextLine);
output_2.write(
"r_i - r_j <= "
+ Integer.toString(Integer.MIN_VALUE)
+ " i, j <- [0 "
+ Integer.toString(vertexNum + 1)
+ "]");
output_2.close();
System.out.println("\n" + "Your output file #2 - constraints has been written");
/*--------------------file #3: constraint graph-------------------*/
Writer output_3 = null;
String fileNameCG = fileName + "-CG.txt";
File file_3 = new File(fileNameCG);
output_3 = new BufferedWriter(new FileWriter(file_3));
int file_3NumOfLines = 12;
for (int w = 0; w <= lineOfG; w++) {
output_3.write(originalFile[w]);
output_3.write(nextLine);
}
output_3.write(
"r_i - r_j <= "
+ Integer.toString(Integer.MIN_VALUE)
+ " i, j <- [0 "
+ Integer.toString(vertexNum + 1)
+ "]");
output_3.write(nextLine);
output_3.write(
"r_i - r_j <= "
+ Integer.toString(Integer.MIN_VALUE)
+ " i, j <- [0 "
+ Integer.toString(vertexNum + 1)
+ "]");
output_3.write(nextLine);
output_3.write(".e");
output_3.close();
System.out.println("\n" + "Your output file #3 - constraint graph has been written");
/*--------------------file #4: intermidiate BF-------------------*/
Writer output_4 = null;
String fileNameBF = fileName + "-BF.txt";
File file_4 = new File(fileNameBF);
output_4 = new BufferedWriter(new FileWriter(file_4));
output_4.write("Following shows the path weight vectors: ");
output_4.write(nextLine);
for (int t = 0; t < 2; t++) {
output_4.write("s^" + t + ": ");
for (int r = 0; r < vertexNum + 1; r++) {
if (r == 0) {
output_4.write("0" + " ");
} else {
output_4.write(Integer.toString(Integer.MIN_VALUE) + " ");
}
}
output_4.write(nextLine);
}
output_4.write(nextLine);
output_4.write("In the 2th iteration, the algorithm reaches the stable value.");
output_4.close();
System.out.println("\n" + "Your output file #4 - BF has been written");
/*--------------------file #5: correlator-retiming-summary.txt-------------------*/
Writer output_5 = null;
String fileNameSM = "correlator-retiming-summary.txt";
File file_5 = new File(fileNameSM);
output_5 = new BufferedWriter(new FileWriter(file_5));
output_5.write("The optimal retiming vector is: ");
for (int r = 0; r < vertexNum + 1; r++) {
if (r == 0) {
output_5.write("0" + " ");
} else {
output_5.write(Integer.toString(Integer.MIN_VALUE) + " ");
}
}
output_5.write(nextLine);
output_5.write("The optimal clock cycle time is: N/A");
output_5.write(nextLine);
output_5.write("The initial(legal) clock cycle time is: N/A");
output_5.close();
System.out.println("\n" + "Your output file #5 - SM has been written");
/*--------------------file #6: correlator-out.txt-------------------*/
Writer output_6 = null;
String fileNameOUT = "correlator-out.txt";
File file_6 = new File(fileNameOUT);
output_6 = new BufferedWriter(new FileWriter(file_6));
for (int w = 0; w <= lineOfG; w++) {
output_6.write(originalFile[w]);
output_6.write(nextLine);
}
output_6.write(".e");
output_6.close();
System.out.println("\n" + "Your output file #6 - OUT has been written");
} else {
/*-------initial nodes-----------*/
Node node = new Node();
node.delay = 1;
Node nodes[] = new Node[vertexNum + 1];
nodes[0] = new Node(0, 0);
for (int n = 1; n < vertexNum + 1; n++) {
nodes[n] = new Node(n, vertexWeight[n - 1]);
}
/*----------initial edges-----------*/
System.out.println("Number of vertices:" + vertexNum);
System.out.println("Number of edges: " + numOfEdges);
Edge[] edges = new Edge[numOfEdges];
for (int e = 0; e < numOfEdges; e++) {
char[] edgeLine = anArray[lineOfG + 1 + e].toCharArray();
int firstSpace = anArray[lineOfG + 1 + e].indexOf(' ');
int secondSpace = anArray[lineOfG + 1 + e].indexOf(' ', firstSpace + 1);
int mult = 1;
int indexFrom = 0;
int indexTo = 0;
for (int n = firstSpace - 1; n >= 0; n--) {
indexFrom = (edgeLine[n] - 48) * mult + indexFrom;
mult = mult * 10;
}
mult = 1;
for (int n = secondSpace - 1; n > firstSpace; n--) {
indexTo = (edgeLine[n] - 48) * mult + indexTo;
mult = mult * 10;
}
int edgeWeight = edgeLine[secondSpace + 1] - 48;
edges[e] = new Edge(nodes[indexFrom], nodes[indexTo], edgeWeight);
}
/*-----------test read file-----------------
for (int p = 0; p < numOfEdges; p++){
System.out.println("Edge Weight Attr 1" + p + ": " + edges[p].weight[0]);
System.out.println("Edge Weight Attr 2" + p + ": " + edges[p].weight[1]);
}
*/
int[][] p;
int[][] q;
LinkedList<String> wholeConstraints = new LinkedList<String>();
LinkedList<String> reducedConstraints = new LinkedList<String>();
int possiblePhi;
int phi_opt;
FloydWarshall FW = new FloydWarshall(nodes, edges);
p = FW.W;
q = FW.D;
int[] unsortedDEle = new int[q.length * q.length];
System.out.println("\n W matrix: ");
for (int m = 0; m < nodes.length; m++) {
for (int n = 0; n < nodes.length; n++) {
System.out.print(p[m][n] + " ");
}
System.out.print('\n');
}
System.out.println("\n D matrix: ");
for (int m = 0; m < nodes.length; m++) {
for (int n = 0; n < nodes.length; n++) {
System.out.print(q[m][n] + " ");
}
System.out.print('\n');
}
/*----------insertion sort-----------*/
int pointer = 0;
for (int n = 0; n < nodes.length; n++) {
for (int m = 0; m < nodes.length; m++) {
unsortedDEle[pointer] = q[n][m];
pointer++;
}
}
for (int t = 1; t < (vertexNum + 1) * (1 + vertexNum); t++) {
int key = unsortedDEle[t];
int s = t - 1;
while (s >= 0 && unsortedDEle[s] > key) {
unsortedDEle[s + 1] = unsortedDEle[s];
s = s - 1;
}
unsortedDEle[s + 1] = key;
}
System.out.println(" \n" + "unsorted D element: ");
for (int m = 0; m < (vertexNum + 1) * (1 + vertexNum); m++) {
System.out.print(unsortedDEle[m] + " ");
}
int adder = 1;
int numOfTry = 1;
for (int h = 1; h < (vertexNum + 1) * (1 + vertexNum); h++) {
if (unsortedDEle[h] != unsortedDEle[adder - 1]) {
unsortedDEle[adder] = unsortedDEle[h];
adder++;
numOfTry++;
}
}
int[] testDEle = new int[numOfTry];
for (int x = 0; x < numOfTry; x++) {
testDEle[x] = unsortedDEle[x];
}
System.out.println(" \n" + "sorted D element: ");
for (int m = 0; m < numOfTry; m++) {
System.out.print(testDEle[m] + " ");
}
int initialPhi = 0;
for (int ii = 0; ii < (vertexNum + 1); ii++) {
for (int jj = 0; jj < (vertexNum + 1); jj++) {
if (p[ii][jj] == 0 && q[ii][jj] > initialPhi) {
initialPhi = q[ii][jj];
}
}
}
System.out.println(" \n" + "initial Phi: " + initialPhi + "\n");
int highPointer = testDEle.length - 1;
int lowPointer = 0;
int currentPhi = testDEle[0];
int firstLegalPhiFlag = 0;
int firstLegalPhi = Integer.MAX_VALUE;
int lastLegalPhi = Integer.MAX_VALUE;
while (highPointer >= lowPointer) {
int currentPointer = (int) (highPointer - lowPointer) / 2 + lowPointer;
currentPhi = testDEle[currentPointer];
reducedConstraints = FW.reduceConstraint(p, q, nodes, edges, currentPhi);
wholeConstraints = FW.basicConstraint(p, q, nodes, edges, currentPhi);
int[][] sortedConstraints = FW.radix(FW.constraintGraph, nodes);
if (FW.bellmanFord(nodes, FW.constraintGraph, sortedConstraints)) {
highPointer = currentPointer - 1;
if (firstLegalPhiFlag == 0) {
firstLegalPhiFlag = 1;
firstLegalPhi = currentPhi;
}
if (firstLegalPhiFlag == 1) {
lastLegalPhi = currentPhi;
}
} else {
lowPointer = currentPointer + 1;
}
}
reducedConstraints = FW.reduceConstraint(p, q, nodes, edges, currentPhi);
wholeConstraints = FW.basicConstraint(p, q, nodes, edges, currentPhi);
// FW.bellmanFord(nodes, FW.constraintGraph,sortedConstraints);
int[][] sortedConstraints = FW.radix(FW.constraintGraph, nodes);
System.out.println("\n\n" + "whole contraints: " + "\n" + wholeConstraints);
System.out.println("\n" + "reduced contraints: " + "\n" + reducedConstraints);
System.out.println("\n" + "reduced contraints size: " + reducedConstraints.size());
System.out.println("\n" + "first legal phi: " + firstLegalPhi);
System.out.println("\n" + "last legal phi: " + lastLegalPhi);
System.out.println("\n\n This is iteration vectors:");
if (FW.bellmanFord(nodes, FW.constraintGraph, sortedConstraints)) {
for (int t = 0; t <= FW.numOfBFIteration; t++) {
System.out.print("s^" + t + ": ");
for (int r = 0; r < vertexNum + 1; r++) {
System.out.print(FW.iterationVector.get(t)[r] + " ");
}
System.out.print("\n");
}
}
System.out.print("\n\n number of iterations: " + FW.numOfBFIteration + "\n");
/*----------------------output files-----------------------------------*/
/*--------file #1: W and D matrices------------*/
Writer output_1 = null;
String fileNameWD = fileName + "-WD.txt";
File file_1 = new File(fileNameWD);
output_1 = new BufferedWriter(new FileWriter(file_1));
String nextLine = "\r\n";
for (int w = 0; w <= vertexNum + 1; w++) {
if (w == 0) {
output_1.write(" W matrix: ");
output_1.write(nextLine);
output_1.write("W ");
for (int z = 0; z < vertexNum + 1; z++) {
output_1.write("v" + z + " ");
}
output_1.write(nextLine);
} else {
String oneLine = " ";
for (int n = 0; n <= vertexNum; n++) {
oneLine = oneLine + Integer.toString(p[w - 1][n]) + " ";
}
int wcol = w - 1;
output_1.write("v" + wcol + oneLine);
output_1.write(nextLine);
}
}
output_1.write(nextLine);
for (int w = 0; w <= vertexNum + 1; w++) {
if (w == 0) {
output_1.write(" D matrix: ");
output_1.write(nextLine);
output_1.write("D ");
for (int z = 0; z < vertexNum + 1; z++) {
output_1.write("v" + z + " ");
}
output_1.write(nextLine);
} else {
String oneLine = " ";
for (int n = 0; n <= vertexNum; n++) {
oneLine = oneLine + Integer.toString(q[w - 1][n]) + " ";
}
int dcol = w - 1;
output_1.write("v" + dcol + oneLine);
output_1.write(nextLine);
}
}
output_1.close();
System.out.println("\n" + "Your output file #1 - WD matrices has been written");
/*--------------------file #2: opt_phi constraints-------------------*/
Writer output_2 = null;
String fileNameConstraints = fileName + "-constraints.txt";
File file_2 = new File(fileNameConstraints);
output_2 = new BufferedWriter(new FileWriter(file_2));
int lengthOfFile2 = reducedConstraints.size() + 1;
for (int w = 0; w < lengthOfFile2; w++) {
if (w == 0) {
output_2.write(" This is final constraints file: ");
output_2.write(nextLine);
} else {
output_2.write(reducedConstraints.get(w - 1));
output_2.write(nextLine);
}
}
output_2.close();
System.out.println("\n" + "Your output file #2 - constraints has been written");
/*--------------------file #3: constraint graph-------------------*/
Writer output_3 = null;
String fileNameCG = fileName + "-CG.txt";
File file_3 = new File(fileNameCG);
output_3 = new BufferedWriter(new FileWriter(file_3));
int numOfConstraints = sortedConstraints.length;
int file_3NumOfLines = numOfConstraints + 10;
int base = numOfConstraints;
for (int w = 0; w < file_3NumOfLines; w++) {
if (w <= lineOfG) {
output_3.write(originalFile[w]);
output_3.write(nextLine);
} else if (base > 0) {
for (int y = 0; y < 3; y++) {
output_3.write(Integer.toString(sortedConstraints[numOfConstraints - base][y]) + " ");
}
base--;
output_3.write(nextLine);
} else if (w == file_3NumOfLines - 1) {
output_3.write(".e");
output_3.write(nextLine);
}
}
output_3.close();
System.out.println("\n" + "Your output file #3 - constraint graph has been written");
/*--------------------file #4: intermidiate BF-------------------*/
Writer output_4 = null;
String fileNameBF = fileName + "-BF.txt";
File file_4 = new File(fileNameBF);
output_4 = new BufferedWriter(new FileWriter(file_4));
output_4.write("Following shows the path weight vectors: ");
output_4.write(nextLine);
for (int t = 0; t <= FW.numOfBFIteration; t++) {
output_4.write("s^" + t + ": ");
for (int r = 0; r < vertexNum + 1; r++) {
output_4.write(FW.iterationVector.get(t)[r] + " ");
}
output_4.write(nextLine);
}
output_4.write(nextLine);
output_4.write(
"In the "
+ FW.numOfBFIteration
+ "th iteration, the algorithm reaches the stable value.");
output_4.close();
System.out.println("\n" + "Your output file #4 - BF has been written");
/*--------------------file #5: correlator-retiming-summary.txt-------------------*/
Writer output_5 = null;
String fileNameSM = fileName + "-summary.txt";
File file_5 = new File(fileNameSM);
output_5 = new BufferedWriter(new FileWriter(file_5));
output_5.write("The optimal retiming vector is: ");
for (int r = 0; r < vertexNum; r++) {
int m = FW.iterationVector.getLast()[r];
output_5.write(Integer.toString(FW.iterationVector.getLast()[r]) + " ");
}
output_5.write(nextLine);
output_5.write("The optimal clock cycle time is: ");
if (lastLegalPhi != Integer.MAX_VALUE) {
output_5.write(Integer.toString(lastLegalPhi));
} else {
output_5.write("N/A");
}
output_5.write(nextLine);
output_5.write("The initial(legal) clock cycle time is: ");
if (firstLegalPhi != Integer.MAX_VALUE) {
output_5.write(Integer.toString(initialPhi));
} else {
output_5.write("N/A");
}
output_5.close();
System.out.println("\n" + "Your output file #5 - SM has been written");
/*--------------------file #6: correlator-out.txt-------------------*/
Writer output_6 = null;
String fileNameOUT = fileName + "-out.txt";
File file_6 = new File(fileNameOUT);
output_6 = new BufferedWriter(new FileWriter(file_6));
output_6.write(".name correlator-out");
output_6.write(nextLine);
output_6.write(".n " + (nodes.length - 1));
output_6.write(nextLine);
output_6.write(".d ");
for (int x = 1; x < nodes.length; x++) {
output_6.write(Integer.toString(nodes[x].delay) + " ");
}
output_6.write(nextLine);
output_6.write(".r ");
for (int y = 1; y < nodes.length; y++) {
output_6.write(Integer.toString(FW.iterationVector.getLast()[y]) + " ");
}
output_6.write(nextLine);
output_6.write(".g");
output_6.write(nextLine);
for (int m = 0; m < nodes.length; m++) {
for (int n = 0; n < nodes.length; n++) {
for (int s = 0; s < edges.length; s++) {
if (edges[s].from.index == m && edges[s].to.index == n) {
output_6.write(Integer.toString(m) + " ");
output_6.write(Integer.toString(n) + " ");
output_6.write(
Integer.toString(
edges[s].weight[0]
+ FW.iterationVector.getLast()[n]
- FW.iterationVector.getLast()[m]));
output_6.write(nextLine);
}
}
}
}
output_6.write(".e");
output_6.close();
System.out.println("\n" + "Your output file #6 - OUT has been written");
}
} catch (Exception e) { // Catch exception if any
System.err.println("Error: " + e.getMessage());
}
}