Refactor Code (MemoryManagementAlgorithms): Pull Up Variable (TheAlgorithms#4145)

ishhan · web-flow · commit 181906d5f72c · 2023-04-12T15:18:49.000Z
diff --git a/src/main/java/com/thealgorithms/others/MemoryManagementAlgorithms.java b/src/main/java/com/thealgorithms/others/MemoryManagementAlgorithms.java
@@ -25,16 +25,25 @@ public abstract ArrayList<Integer> fitProcess(
         int[] sizeOfBlocks,
         int[] sizeOfProcesses
     );
+
+    /**
+     * A constant value used to indicate that an allocation has not been made. 
+     * This value is used as a sentinel value to represent that no allocation has been made 
+     * when allocating space in an array or other data structure. 
+     * The value is -255 and is marked as protected and final to ensure that it cannot be modified
+     * from outside the class and that its value remains consistent throughout the program execution.
+     * 
+     * @author: Ishan Makadia (github.com/intrepid-ishan)
+     * @version: April 06, 2023
+     */
+    protected static final int NO_ALLOCATION = -255;
 }
 
 /**
  * @author Dekas Dimitrios
  */
 class BestFitCPU extends MemoryManagementAlgorithms {
 
-    private static final int NO_ALLOCATION = -255; // if a process has been allocated in position -255,
-
-    // it means that it has not been actually allocated.
 
     /**
      * Method to find the maximum valued element of an array filled with
@@ -115,10 +124,6 @@ public ArrayList<Integer> fitProcess(
  */
 class WorstFitCPU extends MemoryManagementAlgorithms {
 
-    private static final int NO_ALLOCATION = -255; // if a process has been allocated in position -255,
-
-    // it means that it has not been actually allocated.
-
     /**
      * Method to find the index of the memory block that is going to fit the
      * given process based on the worst fit algorithm.
@@ -179,9 +184,6 @@ public ArrayList<Integer> fitProcess(
  */
 class FirstFitCPU extends MemoryManagementAlgorithms {
 
-    private static final int NO_ALLOCATION = -255; // if a process has been allocated in position -255,
-
-    // it means that it has not been actually allocated.
 
     /**
      * Method to find the index of the memory block that is going to fit the
@@ -237,8 +239,6 @@ public ArrayList<Integer> fitProcess(
  */
 class NextFit extends MemoryManagementAlgorithms {
 
-    private static final int NO_ALLOCATION = -255; // if a process has been allocated in position -255,
-    // it means that it has not been actually allocated.
     private int counter = 0; // variable that keeps the position of the last registration into the memory
 
     /**
