Added source files to the project. Note that the manifest file is for jar compression.

src/MMMCalc.java

@@ -0,0 +1,91 @@
+import java.util.HashMap;
+import java.util.Map;
+
+/**
+ * @author Nicolás A. Ortega
+ * @copyright (C) Nicolás A. Ortega
+ * @license GNU General Public License 3.0 (GPLv3)
+ * @year 2014
+ * 
+ */
+public class MMMCalc {
+	private static float[] numArray;
+
+	public static void main(String[] args) {
+		System.out.println("Welcome to MMMCalc v0.1, a simple tool for basic statistics calculations.\n" +
+			"This software is licensed under the GNU GPLv3 license and comes WITHOUT WARRANTY.\n");
+		if(args.length > 0) {
+			float sNum = 0;
+			numArray = new float[args.length];
+
+			for(int i = 0; i < args.length; i++) {
+				numArray[i] = Float.parseFloat(args[i]) - 0f;
+			}
+
+			int nL = numArray.length;
+			float tmp = 0;
+			for(int i = 0; i < nL; i++) {
+				for(int j = 0; j >= (i+1); j--) {
+					if(numArray[j] < numArray[j-1]) {
+						tmp = numArray[j];
+						numArray[j] = numArray[j-1];
+						numArray[j-1] = tmp;
+					}
+				}
+			}
+
+			calcMean();
+			calcMedian();
+			calcMode();
+		} else {
+			System.out.println("You did not mention any variables.");
+		}
+	}
+
+	private static void calcMean() {
+		float mean = 0;
+		float sum = 0;
+
+		for(float i: numArray) {
+			sum += i;
+		}
+
+		mean = sum / (float)numArray.length;
+
+		System.out.println("Mean: " + mean);
+	}
+
+	private static void calcMedian() {
+		int midVar = 0;
+
+		midVar = numArray.length / 2;
+
+		System.out.println("Median: " + numArray[midVar]);
+	}
+
+	private static void calcMode() {
+		HashMap<Float, Float> fx = new HashMap<Float, Float>();
+
+		for(float x: numArray) {
+			Float f = fx.get(x);
+			if(f == null) {
+				fx.put(x, (float)1);
+			} else {
+				fx.put(x, f + 1);
+			}
+		}
+
+		float mode = 0;
+		float modeFreq = 0;
+
+		for(Map.Entry<Float, Float> entry: fx.entrySet()) {
+			float freq = entry.getValue();
+			if(freq > modeFreq) {
+				modeFreq = freq;
+				mode = entry.getKey();
+			}
+		}
+
+		System.out.println("Mode: " + mode + " (frequency: " + modeFreq + ")");
+	}
+}

src/manifest.mf

@@ -0,0 +1,2 @@
+Manifest-Version: 0.1
+Main-Class: MMMCalc