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Code Duplication    Length = 4-5 lines in 3 locations

DataStructures/Lists/SimpleLinkedList.php 3 locations

@@ 93-96 (lines=4) @@
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        $current = $this->head;

                                

                                                            

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        $i = 0;

                                

                                                            

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        while($i < $index && $current->next !== null) {

                                

                                                            

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            $current = $current->next;

                                

                                                            

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            $i++;

                                

                                                            

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        }

                                

                                                            

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        return $current;

                                

                                                            

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    }

                                

                                                                                

                                
                                
                                    @@ 181-185 (lines=5) @@
                                
                            


                                                            

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            $i = 0;

                                

                                                            

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            $current = $this->head;

                                

                                                            

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            $prev = $current;

                                

                                                            

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            while($i < $index && $current->next !== null) {

                                

                                                            

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                $prev = $current;

                                

                                                            

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                $current = $current->next;

                                

                                                            

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                $i++;

                                

                                                            

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            }

                                

                                                            

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            $prev->next = &$newNode;

                                

                                                            

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            $newNode->next = &$current;

                                

                                                                                

                                
                                
                                    @@ 224-227 (lines=4) @@
                                
                            


                                                            

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        $i = 0;

                                

                                                            

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        $current = $this->head;

                                

                                                            

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        $prev = $current;

                                

                                                            

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        while($i < $index && $current->next !== null) {

                                

                                                            

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            $prev = $current;

                                

                                                            

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            $current = $current->next;

                                

                                                            

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        }

                                

                                                            

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        if($index === $this->size - 1) {

                                

                                                            

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            $prev->next = null;