Databases
StackOverflow2013
Postsdbo
PORemove all occurrences of item from a Linked List
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PORemove all occurrences of item from a Linked List
    primarykey
    data
    text
    <p>I've been working on this lab assignment for a few hours and can't understand why this code is not working. The question is to add the method <code>int removeEvery(T item)</code> that removes all occurrences of item and returns the number of removed items to a link list class that implements a link list interface.</p> <p>This is my code: It removes some occurrences of the item, but not all of them. </p> <pre><code>public int removeEvery(T item){ int index = 0; Node currentNode = firstNode; for(int i = 1; i &lt;= numberOfEntries; i++) { System.out.println(currentNode.getData()); if (item.equals(currentNode.getData())){ index++; remove(i);} else{ currentNode = currentNode.getNextNode();} } if(index != 0) return index; return -1; } </code></pre> <p>Here is the remove method that was included in the LinkList class:</p> <pre><code>public T remove(int givenPosition) { T result = null; // return value if ((givenPosition &gt;= 1) &amp;&amp; (givenPosition &lt;= numberOfEntries)) { assert !isEmpty(); if (givenPosition == 1) // case 1: remove first entry { result = firstNode.getData(); // save entry to be removed firstNode = firstNode.getNextNode(); if (numberOfEntries == 1) lastNode = null; // solitary entry was removed } else // case 2: givenPosition &gt; 1 { Node nodeBefore = getNodeAt(givenPosition - 1); Node nodeToRemove = nodeBefore.getNextNode(); Node nodeAfter = nodeToRemove.getNextNode(); nodeBefore.setNextNode(nodeAfter); // disconnect the node to be removed result = nodeToRemove.getData(); // save entry to be removed if (givenPosition == numberOfEntries) lastNode = nodeBefore; // last node was removed } // end if numberOfEntries--; } // end if return result; // return removed entry, or // null if operation fails } // end remove </code></pre>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USKshitij
    1. USForest Hughes
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    2. PO
      singulars
      1. PTAnswer
    3. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. PORemove all occurrences of item from a Linked List
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. PORemove all occurrences of item from a Linked List
      1. This table or related slice is empty.
      1. VTApproveEditSuggestion
    3. VO
      singulars
      1. PORemove all occurrences of item from a Linked List
      1. This table or related slice is empty.
      1. VTUpMod
    1. This table or related slice is empty.
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload