Added subset generation method and JavaDocs.

src/Assignments/A2/Partition.java

@@ -58,6 +58,36 @@ Algorithm Design Block
 */
 package Assignments.A2;
 
+import java.util.ArrayList;
+import java.util.List;
+
 public class Partition {
 
+    private int[] set;
+    private List<List<Integer>> subsets;
+
+    /**
+     * Generates the list of subsets using Bit Shift Counting by iterating over all combinations of 1 to n.
+     * After shifting the counter, the current subset is created initialized and if 1 shifted by j is logically
+     * ANDed with the i is not 0, it adds the value j represents to the subset.
+     *
+     * @precondition none
+     * @postcondition the subsets are generated and added to the field.
+     */
+    public void generateSubsets() {
+        List<List<Integer>> subsets = new ArrayList<>();
+        int n = this.set.length;
+
+        for (int i = 0; i < (1 << n); i++) {
+            List<Integer> currentSubset = new ArrayList<>();
+            for (int j = 0; j < n; j++) {
+                if ((i & (1 << j)) != 0) {
+                    currentSubset.add(this.set[j]);
+                }
+            }
+            subsets.add(currentSubset);
+        }
+        this.subsets = subsets;
+    }
+
 }