Intermediate state

P/Sd1/Console_sum/src/main/java/de/hdm_stuttgart/mi/sda1/console_sum/App.java

@@ -41,11 +41,29 @@ public class App {
    }
    
    
+   /**
+    * Format a sum of an array of integer values according to the following
+    * rules:
+    *   1. Avoiding zeroes
+    *   2. Trying to start a sum with a non-negative value
+    *   3. Representing single values without equal sign.
+    *   
+    *   Examples:
+    *   {1,7,-4} --> "1+7-4=4"
+    *   {-1,7,3} --> "7-1+3=9"
+    *   {5} --> "4"
+    *   {} --> "0"
+    *   {0,0,0} --> "0"
+    *   {1,0,4,0,0,5} --> "1+4+5=10"
+    * 
+    * @param values The set of integer values to be represented as a sum
+    * @return The formatted string.
+    */
    static public String prettifyOutput(final int[] values) {
       
       final int [] reducedCopy = new int[values.length];
       
-      // Copy all but zeroes
+      // Copy all values but zeroes
       int currentIndex = 0;
       for (final int value : values) {
          if (0 != value) {
@@ -54,7 +72,9 @@ public class App {
       }
       
       // check for first value being negative
-      
+      if (1 < reducedCopy.length && reducedCopy[0] < 0) {
+         for (int i = 1; i < reducedCopy.length && reducedCopy[i] < 0; i++);
+      }
       
       
       return null;//TODO