/**
* Takes a given input file and averages the number of trials, then writes to outputFile.
* runAlgorithms() can run multiple times, this is to get a csv file with
*
* @param br
* @param numTrials
* @param inputName
* @param outputName
* @throws IOException
*/
private static void averageIntCSVResults(
BufferedReader br, int numTrials, String inputName, String outputName) throws IOException {
String[] curLineSplit = br.readLine().split(",");
String curName = curLineSplit[0];
int curSize = Integer.parseInt(curLineSplit[3]);
double avg = Double.parseDouble(curLineSplit[1]);
String curLine = "";
long numComparisons = Long.parseLong(curLineSplit[2]);
while ((curLine = br.readLine()) != null) {
curLineSplit = curLine.split(",");
if (avg == 0 && numComparisons == 0) {
curSize = Integer.parseInt(curLineSplit[3]);
curName = curLineSplit[0];
numComparisons = Long.parseLong(curLineSplit[2]);
}
if (curLineSplit[0].equals(curName) && Integer.parseInt(curLineSplit[3]) == curSize) {
avg += Double.parseDouble(curLineSplit[1]);
// numComparisons += Long.parseLong(curLineSplit[2]);
} else {
avg /= numTrials;
// numComparisons /= numTrials;
String output = curName + "," + avg + "," + numComparisons;
sortWrite(outputName, output, curSize);
avg = 0;
numComparisons = 0;
}
}
String output = curName + "," + avg + "," + numComparisons;
sortWrite(outputName, output, curSize);
}
/**
* Runs algorithm on various list sizes with various algorithms. TODO: Make use of input
* parameters.
*
* @param args
*/
public static void runSortingAlgorithms(String[] args) {
// Sorter[] s = {new BubbleSort(args)};
// Sorter[] s = {new ExchangeSort(args),
// new InsertionSort(args), new MergeSort(args),new QuickSort(args), new SelectionSort(args)};
Sorter[] s = {new QuickSort(args), new MergeSort(args)};
String outputName = "algtimings11.csv";
int[] listSizes =
new int[] {
100, 1000, 2000, 3000, 4000, 5000, 6000, 7000, 8000, 9000, 10000, 25000, 50000, 75000,
100000
};
s[0].hybrid(new SelectionSort(), 7);
s[1].hybrid(new SelectionSort(), 7);
Integer[][] lists = new Integer[listSizes.length][listSizes.length];
for (int i = 0; i < listSizes.length; i++) {
lists[i] = getIntArray(listSizes[i] + ".csv");
}
int numTests = 6;
for (Sorter s1 : s) {
for (int j = 0; j < lists.length; j++) { // Lists
for (int k = 0; k < numTests; k++) { // number of interations
s1.sort(lists[j].clone());
DataFeed.sortWrite(outputName, s1.getData(), lists[j].length);
}
}
}
}
/**
* Writes a line that is given by sorter.getData()
*
* @param line
* @param n
*/
public static void sortWrite(String path, String line, int n) {
Path p = Paths.get(path);
try {
List<String> lines = Files.readAllLines(p);
if (lines.isEmpty()) {
lines.add("Name,Time,Comparisons,Size");
}
lines.add(line + "," + n);
Files.write(Paths.get(p.toString()), lines);
} catch (IOException e) {
if (e.getCause() == new NoSuchFieldException().getCause()) {
try {
Files.createFile(p);
sortWrite(path, line, n);
} catch (IOException ex) {
java.util.logging.Logger.getLogger(SortLauncher.class.getName())
.log(Level.SEVERE, null, ex);
}
}
}
}