forgot to add util folder in optimization library

git-svn-id: https://ws10smt.googlecode.com/svn/trunk@206 ec762483-ff6d-05da-a07a-a48fb63a330f

1 files changed, 41 insertions, 0 deletions

diff --git a/gi/posterior-regularisation/prjava/src/util/Array.java b/gi/posterior-regularisation/prjava/src/util/Array.java
new file mode 100644
index 00000000..cc4725af
--- /dev/null
+++ b/gi/posterior-regularisation/prjava/src/util/Array.java
@@ -0,0 +1,41 @@
+package util;
+
+import java.util.Arrays;
+
+public class Array {
+
+	
+	
+	public  static void sortDescending(double[] ds){
+		for (int i = 0; i < ds.length; i++) ds[i] = -ds[i];
+		Arrays.sort(ds);
+		for (int i = 0; i < ds.length; i++) ds[i] = -ds[i];
+	}
+	
+	/** 
+	 * Return a new reversed array
+	 * @param array
+	 * @return
+	 */
+	public static int[] reverseIntArray(int[] array){
+		int[] reversed = new int[array.length];
+		for (int i = 0; i < reversed.length; i++) {
+			reversed[i] = array[reversed.length-1-i];
+		}
+		return reversed;
+	}
+	
+	public static String[] sumArray(String[] in, int from){
+		String[] res = new String[in.length-from];
+		for (int i = from; i < in.length; i++) {
+			res[i-from] = in[i];
+		}
+		return res;
+	}
+	
+	public static void main(String[] args) {
+		int[] i = {1,2,3,4};
+		util.Printing.printIntArray(i, null, "original");
+		util.Printing.printIntArray(reverseIntArray(i), null, "reversed");
+	}
+}