labs

labs/lab7/IntList.java

@@ -0,0 +1,50 @@
+// **************************************************************** 
+// IntList.java 
+// 
+// An (unsorted) integer list class with a method to add an 
+// integer to the list and a toString method that returns the contents 
+// of the list with indices. 
+// **************************************************************** 
+public class IntList { 
+    protected int[] list; 
+    protected int numElements = 0; 
+
+    //------------------------------------------------------------- 
+    // Constructor -- creates an integer list of a given size. 
+    //------------------------------------------------------------- 
+    public IntList(int size) { 
+        list = new int[size]; 
+    } 
+
+    //------------------------------------------------------------- 
+    // Adds an integer to the list. If the list is full, 
+    // prints a message and does nothing. 
+    //------------------------------------------------------------- 
+    public void add(int value) { 
+        if (numElements == list.length) { 
+            System.out.println("Can't add, list is full"); 
+        } else { 
+            list[numElements] = value; 
+            numElements++; 
+        } 
+    } 
+
+    //------------------------------------------------------------- 
+    // Returns the list elements with indices as a string. 
+    //------------------------------------------------------------- 
+    @Override
+    public String toString() { 
+        StringBuilder result = new StringBuilder(); 
+        for (int i = 0; i < numElements; i++) { 
+            result.append(i).append(": ").append(list[i]).append("\n"); 
+        } 
+        return result.toString(); 
+    } 
+} 
+
+// ------------------------------------------------------------- 
+// Interface for sorting numbers. 
+// ------------------------------------------------------------- 
+interface NumberSorter { 
+    void sortNumbers(); 
+}