Mittelwertsrechnung implementiert

Axel/src/de/hs_mannheim/informatik/spreadsheet/Axel.java

@@ -198,7 +198,7 @@ public class Axel {
 			if (userInput.toUpperCase().matches("[A-Za-z][1-9][0-9]?="
 					+ "((((([A-Za-z][1-9][0-9]?)|([0-9]+))(\\*|\\+|\\-|\\/))*"
 					+ "(([A-Za-z][1-9][0-9]?)|([0-9]+)))|"
-					+ "((SUMME|PRODUKT|MID|STABW|MIN|MAX)\\(([A-Za-z][1-9][0-9]*\\:[A-Za-z][1-9][0-9]*)\\)))")){
+					+ "((SUMME|PRODUKT|MITTEL|STABW|MIN|MAX)\\(([A-Za-z][1-9][0-9]*\\:[A-Za-z][1-9][0-9]*)\\)))")){
 				String[] parts = userInput.split("=");
 				
 				//prüft ob eingegebene Zelle im spreadsheet existiert

Axel/src/de/hs_mannheim/informatik/spreadsheet/Spreadsheet.java

@@ -164,8 +164,16 @@ public class Spreadsheet {
 			
 			
 			
-		else if (formula.startsWith("MITTELWERT("))  // e.g. MITTELWERT(A3:A5)
-			result = "TODO"; // TODO
+		else if (formula.startsWith("MITTEL(")) {  // e.g. MITTEL(A3:A5)
+			String[] onlyCells = formula.substring(7, formula.length() - 1).split(":");
+			
+			if(checkIfCellExists(onlyCells[0])&&checkIfCellExists(onlyCells[1])) {
+				result = "" + mit(onlyCells[0], onlyCells[1]);
+			}
+		}
+			
+		
+		
 		else if (formula.startsWith("STABW("))  // e.g. STABW(C6:D8) -> Standardabweichung
 			result = "TODO"; // TODO
 		else if (formula.startsWith("MIN("))  // e.g. MIN(C13:H13) -> größter Wert
@@ -183,6 +191,8 @@ public class Spreadsheet {
 		cells[row][col].setValue("" + result);
 	}
 
+	
+
 	/**
 	 * Method for calculating the sum of a rectangular block of cells, such as from A1 to B3.
 	 * @param startCellName The name of the cell in the upper left corner of the rectangle.
@@ -210,7 +220,16 @@ public class Spreadsheet {
 		return produkt;
 	}
 	
+	private long mit(String startCellName, String endCellName) {
+		int werte[]=getValues(startCellName,endCellName);
 		
+		int summe=0;
+		for(int i=0;i<werte.length;i++) {
+			summe+=werte[i];
+		}
+		return summe/werte.length;
+		
+	}
 
 //	TODO: Javadoc comments
 	private int[] getValues(String startCellName, String endCellName) {