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Commit 7ebd229

Browse files
Update List.java
1 parent 0986c3d commit 7ebd229

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1 file changed

+22
-22
lines changed
  • algorithms/src/main/java/ivanmarkovic/algorithms/linkedlists/circulardoublylinkedlist

1 file changed

+22
-22
lines changed

‎algorithms/src/main/java/ivanmarkovic/algorithms/linkedlists/circulardoublylinkedlist/List.java

Lines changed: 22 additions & 22 deletions
Original file line numberDiff line numberDiff line change
@@ -97,32 +97,32 @@ public Integer deleteFromTail() {
9797
return retNode.payload;
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}
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}
100-
101-
public Integer deleteNodesWithValue(int value) {
100+
101+
public void deleteNodesWithValue(int value) {
102102
if(this.isEmpty())
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throw new NoSuchElementException();
104-
else {
105-
Integer retValue = null;
106-
Node current = this.head;
107-
while (current.next != this.head) {
108-
if(current.next.payload == value) {
109-
retValue = current.next.payload;
110-
current.next = current.next.next;
111-
current.next.prev = current;
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}
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else
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current = current.next;
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}
116-
this.tail = current;
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this.tail.next = this.head;
118-
this.head.prev = this.tail;
104+
if(this.head == this.tail) {
119105
if(this.head.payload == value)
120-
retValue = this.deleteFromHead();
121-
if(retValue == null)
122-
throw new NoSuchElementException();
123-
else
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return retValue;
106+
this.deleteFromHead();
107+
return;
108+
}
109+
110+
Node node = this.head;
111+
while (true) {
112+
if (node.next.payload == value) {
113+
boolean toBreak = node.next == this.tail;
114+
node.next = node.next.next;
115+
node.next.prev = node;
116+
if(toBreak)
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break;
118+
} else {
119+
node = node.next;
120+
}
125121
}
122+
this.tail = node;
123+
if (this.head.payload == value)
124+
this.deleteFromHead();
125+
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}
127127

128128
public void deleteOnIndex(int index) {

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