Compare commits
7 Commits
Author | SHA1 | Date |
---|---|---|
Sebastian Tews | 95913e847f | |
Sebastian Tews | 9b12aa90e1 | |
Sebastian Tews | 091418cbde | |
Sebastian Tews | 98942ba56d | |
Sebastian Tews | 0c46be39b4 | |
Sebastian Tews | df6ff99a0c | |
Sebastian Tews | 49d70f71c3 |
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@ -1,4 +1,20 @@
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1,2
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3,4
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5,6
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7,8
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Hallo,,,,,,,,,,,,,,,,,,,
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1,,7,,,,,,,,,,,,,,,,,
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55,7,,4,,,,,,,,,,,,,,,,
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9,,,,,,,,,,,,,,,,,,,
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1,,,,,,,,=7*6,=7*6,,,,,,,,,,
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,,,,,,,,,=3/2,,,,,,,,,,
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,,,,,,,,,,,,,,,,,,,
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,,,,,,,,,,,,,,,,,,,
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,=41+A2,,,,,,,,,,,,,,,,,,
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,,,,,,,,,,,,,,,,,,,
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,,,,,,,,,,,,,,,,,,,
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,,,,,,,,,LL,,,,,,,,,,
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,,,,,,,,,,,,,,,,,,,
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,,,,,,,,,,,,,,,,,,,
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,,,,,,,Z1,,,,,,,,,,,,
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,,,,,,,,,,,,,,,,,,,
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,,,,,,,,,,,,,,,,,,,
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,,,,,,,,,,,,,,,,,,,
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,,,,,,,,,,,,,,,,,,,
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20,,,,,,,,,,,,,,,,,,,
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@ -1,5 +1,5 @@
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package de.hs_mannheim.informatik.spreadsheet;
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import java.util.Scanner;
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import java.io.FileNotFoundException;
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/**
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@ -10,9 +10,34 @@ import java.io.FileNotFoundException;
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public class Axel {
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public static void main(String[] args) throws FileNotFoundException {
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Spreadsheet spr = new Spreadsheet(10,10);
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Scanner sc = new Scanner(System.in);
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Scanner scanner = new Scanner(System.in);
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System.out.println("Wie viele Zeilen soll das Spreadsheet haben? (1-99)");
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spr.put("A3", "123");
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int eingabeR = scanner.nextInt();
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if (eingabeR > 99) {
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System.out.println("Eingabe überschreitet das Maximum. Eingabe wird zu 99 gesetzt");
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eingabeR = 99;
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} else {
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System.out.println("Eingabe ist möglich");
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}
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System.out.println("Wie viele Spalten soll das Spreadsheet haben? (1-26)");
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int eingabeC = scanner.nextInt();
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if (eingabeC > 26) {
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System.out.println("Eingabe überschreitet das Maximum. Eingabe wird zu 26 gesetzt");
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eingabeC = 26;
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} else {
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System.out.println("Eingabe ist möglich");
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}
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//Begrenzung der Zeilen und Spalten größe durch if Abfrage.
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// Wert wird automatisch bei Überschreitung zum Maximum
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//Tabellengröße anpassen nach "Wahl"
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Spreadsheet spr = new Spreadsheet(eingabeR, eingabeC);
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spr.readCsv("C:\\Users\\sebas\\IdeaProjects\\PR1-Spreadsheet\\Axel\\resources\\zahlen.csv",',', "A1");
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// csv auslesen
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//spr.put("A1", "123");
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spr.put("A2", "1");
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spr.put("B9", "=41+A2");
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@ -21,9 +46,54 @@ public class Axel {
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System.out.println(spr);
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spr.saveCsv("/tmp/test.csv");
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//spr.saveCsv("C:\\Users\\sebas\\IdeaProjects\\PR1-Spreadsheet\\Axel\\resources\\zahlen.csv");
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// TODO: You might want to put "UI loop" for entering value and formulas here resp. in some UI methods.
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}
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System.out.println("Möchten Sie, die Tabelle bearbeiten (j/n)");
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String eingabe = "";
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String eingabeCR = "";
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String eingabeValue = "";
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do {
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eingabe = sc.nextLine();
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if (eingabe.equals("j")) {
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System.out.println("Geben Sie die Spalte (A-Z) und die Zeile (1-99)");
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eingabeCR = sc.nextLine();
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System.out.println("Weisen Sie jetzt einen Wert zu");
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eingabeValue = sc.nextLine();
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spr.put(eingabeCR, eingabeValue);
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System.out.println();
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System.out.println(spr);
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System.out.println("Möchten Sie weiter machen(j/n)?");
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} else if (eingabe.equals("n")) {
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//System.out.println("Das Programm wird beendet");
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break;
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} else {
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System.out.println("Falsche eingabe bitte erneut versuchen");
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}
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} while (true);
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System.out.println("Möchten Sie die Änderungen an der Tabelle speichern? (j/n)");
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eingabe = sc.nextLine();
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if(eingabe.equals("j"))
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{
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spr.saveCsv("C:\\Users\\sebas\\IdeaProjects\\PR1-Spreadsheet\\Axel\\resources\\zahlen.csv");
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System.out.println("Das Programm wird beendet");
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} else{
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System.out.println("Tabelle wird nicht gespeichert. Das Programm wird beendet");
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}
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// Speichern der Tabelle bzw Inhalt der Textdatei(Änderungen)
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}
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}
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@ -1,8 +1,13 @@
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package de.hs_mannheim.informatik.spreadsheet;
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import org.junit.Test;
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import java.io.File;
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import java.io.FileNotFoundException;
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import java.io.IOException;
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import java.io.PrintWriter;
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import java.util.ArrayList;
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import java.util.Scanner;
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import java.util.regex.Matcher;
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import java.util.regex.Pattern;
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@ -29,6 +34,8 @@ public class Spreadsheet {
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for (int r = 0; r < rows; r++)
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for (int c = 0; c < cols; c++)
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cells[r][c] = new Cell();
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//Fehlermeldung wenn es über 99 Zeilen und 26 Spalten sind
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//Oben genanntes bringt nichts. Bugfix durch zurücksetzen auf vorherigen Wert. Fehlermeldung unnötig durch if Abfrage.
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}
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// -----
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@ -62,7 +69,14 @@ public class Spreadsheet {
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}
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private int getRow(String cellName) {
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return cellName.charAt(1) - '1';
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int ergebnis = 0;
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for (int i = 1; i < cellName.length() ; i++) {
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ergebnis = (ergebnis * 10) + cellName.charAt(i) - '0';
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}
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return ergebnis-1;
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}
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// -----
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@ -72,14 +86,47 @@ public class Spreadsheet {
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* A method for reading in data from a CSV file.
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* @param path The file to read.
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* @param separator The char used to split up the input, e.g. a comma or a semicolon.
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* @param starCellName The upper left cell where data from the CSV file should be inserted.
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* @param startCellName The upper left cell where data from the CSV file should be inserted.
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* @return Nothing.
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* @exception IOException If path does not exist.
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*/
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public void readCsv(String path, char separator, String startCellName) throws FileNotFoundException {
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// TODO: implement this
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ArrayList<String> lines = readFile(path);
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String[] seperateLines = new String[lines.size()];
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int startingCellRow = getRow(startCellName);
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int startingCellCol = getCol(startCellName);
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String[][] quickSave = new String[cells.length - startingCellRow][cells[0].length - startingCellCol];
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for (int i = 0; i < seperateLines.length; i++) {
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quickSave[i] = lines.get(i).split(separator+""); //Seperator erstellt
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for (int j = 0; j < quickSave[i].length; j++) {
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put(startingCellRow+i,startingCellCol+j,quickSave[i][j]);
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}
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}
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}
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/**
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*
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* @param path Dateipfad der Datei die von der Methode ausgelesen werden soll
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* @return lines
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* @throws FileNotFoundException
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*/
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public static ArrayList<String> readFile(String path) throws FileNotFoundException {
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ArrayList<String> lines = new ArrayList<>();
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Scanner sc = new Scanner(new File(path));
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while (sc.hasNextLine()) {
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lines.add(sc.nextLine());
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}
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sc.close();
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return lines;
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}
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/**
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* A method for saving data to a CSV file.
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* @param path The file to write.
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@ -106,26 +153,27 @@ public class Spreadsheet {
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}
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/**
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* This method does the actual evaluation/calcluation of a specific cell
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* @param cellName the name of the cell to be evaluated
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* @return Nothing.
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* Methode welche die Eingabe überprüft und anhand dessen, dann auf abgebildete Methoden zugreift
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* und das Ergebnis wiedergibt
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* @param row steht für die Zeile
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* @param col steht für die Spalte
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*/
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private void evaluateCell(int row, int col) {
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String formula = cells[row][col].getFormula();
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String result = "";
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if (formula.startsWith("SUMME(")) // e.g. SUMME(A3:A8)
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if (formula.startsWith("SUMME(")) // e.g. SUMME(A3:A8)
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result = "" + sum(formula.substring(6, 8), formula.substring(9, 11)); // TODO adapt to cells with two digits
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else if (formula.startsWith("PRODUKT(")) // e.g. PRODUKT(A3:B9)
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result = "TODO"; // TODO
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result = "" + multiplier(formula.substring(8, 10), formula.substring(11, 13)); // TODO
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else if (formula.startsWith("MITTELWERT(")) // e.g. MITTELWERT(A3:A5)
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result = "TODO"; // TODO
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result = "" + mittelwert(formula.substring(11, 13), formula.substring(14, 16)); // TODO
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else if (formula.startsWith("STABW(")) // e.g. STABW(C6:D8) -> Standardabweichung
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result = "TODO"; // TODO
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else if (formula.startsWith("MIN(")) // e.g. MIN(C13:H13) -> größter Wert
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result = "TODO"; // TODO
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result = "" + min(formula.substring(4, 6), formula.substring(7, 9)); // TODO
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else if (formula.startsWith("MAX(")) // e.g. MAX(A1:A10) -> Standardabweichung
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result = "TODO"; // TODO
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result = "" + max(formula.substring(4, 6), formula.substring(7, 9)); // TODO
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else if (!formula.isEmpty()) {
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try {
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result = "" + calculate(formula);
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@ -136,7 +184,7 @@ public class Spreadsheet {
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cells[row][col].setValue("" + result);
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}
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//substring start und ende auf die entsprechende Wortlänge bei der Bedingung anpassen
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/**
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* Method for calculating the sum of a rectangular block of cells, such as from A1 to B3.
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* @param startCellName The name of the cell in the upper left corner of the rectangle.
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@ -144,10 +192,128 @@ public class Spreadsheet {
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* @return The sum calculated.
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*/
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private long sum(String startCellName, String endCellName) {
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int startRow = getRow(startCellName);
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int startCol = getCol(startCellName);
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int endRow = getRow(endCellName);
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int endCol = getCol(endCellName);
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long result = 0;
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for (int i = startRow; i <= endRow; i++) {
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for (int j = startCol; j <= endCol; j++) {
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result += (Integer.parseInt(cells[i][j].getValue()));
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}
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}
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return result;
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}
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/**
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* Methode zum berechnen des Produkts eines viereckigen Blocks aus Zellen. Beispiel A2 bis B2
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* @param startCellName The name of the cell in the upper left corner of the rectangle.
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* @param endCellName The name of the cell in the lower right corner of the rectangle.
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* @return das Produkt. Hier result
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*/
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private long multiplier(String startCellName, String endCellName) {
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int startRow = getRow(startCellName);
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int startCol = getCol(startCellName);
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int endRow = getRow(endCellName);
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int endCol = getCol(endCellName);
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long result = 1; // 1 da hier Multiplikation startet
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for (int i = startRow; i <= endRow; i++) {
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for (int j = startCol; j <= endCol; j++) {
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result *= (Integer.parseInt(cells[i][j].getValue()));
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}
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}
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return result;
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}
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/**
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* Methode zum berechnen des Mittelwerts eines viereckigen Blocks aus Zellen. Beispiel A2 bis B2
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* @param startCellName The name of the cell in the upper left corner of the rectangle.
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* @param endCellName The name of the cell in the lower right corner of the rectangle.
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* @return der Mittelwert. Hier result
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*/
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private long mittelwert(String startCellName, String endCellName) {
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int startRow = getRow(startCellName);
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int startCol = getCol(startCellName);
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int endRow = getRow(endCellName);
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int endCol = getCol(endCellName);
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int counter = 0;
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long summe = 0;
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long result = 0;
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for (int i = startRow; i <= endRow; i++) {
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for (int j = startCol; j <= endCol; j++) {
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counter++;
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summe += (Integer.parseInt(cells[i][j].getValue()));
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}
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}
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result = summe / counter;
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return result;
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}
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/**
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* Methode zum berechnen des Minimums eines viereckigen Blocks aus Zellen. Beispiel A2 bis B2
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* @param startCellName The name of the cell in the upper left corner of the rectangle.
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* @param endCellName The name of the cell in the lower right corner of the rectangle.
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* @return die kleinste Zahl. Hier result
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*/
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private long min(String startCellName, String endCellName) {
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int startRow = getRow(startCellName);
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int startCol = getCol(startCellName);
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int endRow = getRow(endCellName);
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int endCol = getCol(endCellName);
|
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long result = 0;
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for (int i = startRow; i <= endRow; i++) {
|
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for (int j = startCol; j <= endCol; j++) {
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result = (Integer.parseInt(cells[i][j].getValue()));
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if(result > (Integer.parseInt(cells[i][j].getValue()))) //größer result für min Wert
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{
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result = (Integer.parseInt(cells[i][j].getValue()));
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}
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}
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}
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return result;
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}
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/**
|
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* Methode zum berechnen des Maximums eines viereckigen Blocks aus Zellen. Beispiel A2 bis B2
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* @param startCellName The name of the cell in the upper left corner of the rectangle.
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* @param endCellName The name of the cell in the lower right corner of the rectangle.
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* @return das Maximum. Hier result
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*/
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private long max(String startCellName, String endCellName) {
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int startRow = getRow(startCellName);
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int startCol = getCol(startCellName);
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int endRow = getRow(endCellName);
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int endCol = getCol(endCellName);
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long result = 0;
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||||
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for (int i = startRow; i <= endRow; i++) {
|
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for (int j = startCol; j <= endCol; j++) {
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if(result < (Integer.parseInt(cells[i][j].getValue()))) // kleiner result für max Wert
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{
|
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result = (Integer.parseInt(cells[i][j].getValue()));
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}
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}
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}
|
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return result;
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}
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||||
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||||
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||||
// TODO implement
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||||
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return 0;
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}
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||||
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||||
/**
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* This method calculates the result of a "normal" algebraic expression. It only needs to support
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|
@ -158,24 +324,94 @@ public class Spreadsheet {
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* @param formula The expression to be evaluated.
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* @return The result calculated.
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*/
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private long calculate(String formula) throws ArithmeticException {
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public long calculate(String formula) throws ArithmeticException {
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Matcher m = Pattern.compile("([A-Z][0-9]*)|[-\\+\\*/]|[0-9]*").matcher(formula);
|
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|
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long res = 0;
|
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long result = 0;
|
||||
int zwischenspeicher = 0;
|
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int counter = 0;
|
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int newNumber = 0;
|
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|
||||
// TODO implement
|
||||
|
||||
// uncomment the following to see an example how the elements of a formula can be accessed
|
||||
|
||||
while (m.find()) { // m.find() must always be used before m.group()
|
||||
String s = m.group();
|
||||
if (!s.isEmpty()) {
|
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System.out.println(s);
|
||||
//System.out.println(s);
|
||||
counter++;
|
||||
|
||||
switch (counter){
|
||||
case 1:
|
||||
try {
|
||||
result = Integer.parseInt(s);
|
||||
}catch (Exception ignored){
|
||||
result = Integer.parseInt(get(s));
|
||||
}
|
||||
break;
|
||||
case 2:
|
||||
switch(s) {
|
||||
case "+":
|
||||
zwischenspeicher = 1;
|
||||
break;
|
||||
case "-":
|
||||
zwischenspeicher = 2;
|
||||
break;
|
||||
case "*":
|
||||
zwischenspeicher = 3;
|
||||
break;
|
||||
case "/":
|
||||
zwischenspeicher = 4;
|
||||
break;
|
||||
default:
|
||||
System.out.println("ERROR");
|
||||
break;
|
||||
}
|
||||
break;
|
||||
case 3:
|
||||
try {
|
||||
newNumber = Integer.parseInt(s);
|
||||
}catch (Exception ignored){
|
||||
newNumber = Integer.parseInt(get(s));
|
||||
}
|
||||
result = rechner(result, zwischenspeicher, newNumber);
|
||||
|
||||
counter = 1;
|
||||
break;
|
||||
default:
|
||||
System.out.println("ERROR");
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return res;
|
||||
return result;
|
||||
}
|
||||
|
||||
/**
|
||||
*
|
||||
* @param a steht für die Zahl "a"
|
||||
* @param auswahl steht für die entsprechende Rechnung
|
||||
* @param b steht für die Zahl "b"
|
||||
* @return die Rechnung
|
||||
*/
|
||||
public static long rechner(long a, int auswahl, int b) {
|
||||
switch(auswahl){
|
||||
case 1:
|
||||
return a + b;
|
||||
case 2:
|
||||
return a - b;
|
||||
case 3:
|
||||
return a * b;
|
||||
case 4:
|
||||
return a / b;
|
||||
default:
|
||||
System.out.println("ERROR");
|
||||
break;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
// -----
|
||||
|
||||
public String toString() {
|
||||
|
|
|
@ -0,0 +1,26 @@
|
|||
package de.hs_mannheim.informatik.spreadsheet;
|
||||
|
||||
import org.junit.Test;
|
||||
|
||||
import static org.junit.jupiter.api.Assertions.*;
|
||||
|
||||
class SpreadsheetTest {
|
||||
|
||||
@org.junit.jupiter.api.Test
|
||||
void testCalculate() {
|
||||
Spreadsheet spr = new Spreadsheet(25,25); // Irgendeine Größe einstellen des Spreadsheets
|
||||
|
||||
assertEquals(spr.calculate("2+2"), 4);
|
||||
assertEquals(spr.calculate("3*3"), 9);
|
||||
assertEquals(spr.calculate("6/2"), 3);
|
||||
|
||||
|
||||
|
||||
spr.put("A1", "6");
|
||||
spr.put("A2", "2");
|
||||
|
||||
assertEquals(spr.calculate("A1+A2"), 8);
|
||||
assertEquals(spr.calculate("A1*A2"), 12);
|
||||
assertEquals(spr.calculate("A1/A2"), 3);
|
||||
}
|
||||
}
|
Loading…
Reference in New Issue