@@ -95,13 +95,13 @@ public int compare(int i, int j) {
9595 if (Thread .interrupted ())
9696 throw new StopException ();
9797
98- setElement (i , ElementState .COMPARING );
99- setElement (j , ElementState .COMPARING );
98+ setElementInternal (i , ElementState .COMPARING );
99+ setElementInternal (j , ElementState .COMPARING );
100100 regulateSpeed ();
101101 comparisonCount .setOpaque (comparisonCount .getPlain () + 1 );
102102
103- setElement (i , ElementState .ACTIVE );
104- setElement (j , ElementState .ACTIVE );
103+ setElementInternal (i , ElementState .ACTIVE );
104+ setElementInternal (j , ElementState .ACTIVE );
105105
106106 return super .compare (i , j );
107107 }
@@ -114,17 +114,16 @@ public void swap(int i, int j) {
114114 if (Thread .interrupted ())
115115 throw new StopException ();
116116 swapCount .setOpaque (swapCount .getPlain () + 1 );
117- setElement (i , ElementState .ACTIVE );
118- setElement (j , ElementState .ACTIVE );
117+ setElementInternal (i , ElementState .ACTIVE );
118+ setElementInternal (j , ElementState .ACTIVE );
119119 regulateSpeed ();
120120 }
121121
122122
123123 /* Array visualization */
124124
125125 public void setElement (int index , ElementState state ) {
126- Objects .requireNonNull (state );
127- this .states [index ] = state .ordinal ();
126+ setElementInternal (index , Objects .requireNonNull (state ));
128127 }
129128
130129
@@ -134,6 +133,11 @@ public void setRange(int start, int end, ElementState state) {
134133 }
135134
136135
136+ private void setElementInternal (int index , ElementState state ) {
137+ states [index ] = state .ordinal ();
138+ }
139+ 140+ 137141 public int getValue (int index ) {
138142 return values [index ];
139143 }
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