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POHow to write this return statement so I don't return null?
 

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  1. POHow to write this return statement so I don't return null?
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    <p>I don't know where or how to place my return statement so I get back a linked list. The return of the linked list is in a loop. I need to have a return statement outside that however but can't get tit to work. I just keep getting the null return. Tried putting in an else statement but its not working. I feel like this is a simple solution but can't work it out. I know the return null is always read in this code, just don't know how to put it so it doesn't always return null.</p> <p>Method is taking in a string of numbers, getting letters attached to those numbers on a keypad, and putting possible combinations of those strings into a method that finds words and returns a linked list of those words.</p> <p>Just can't work out the return statement in the method.</p> <pre><code> public LinkedList bfs_search(String numberEntered) { //use a queue for all the unsearched combinations to go Queue&lt;String&gt; q = new LinkedList&lt;String&gt;(); q.add(""); String possibleWord = null; //loop through each number entered for(int i = 0; i &lt; numberEntered.length(); i++) { //get the letters on the keypad for current number String lettersOnKeypadNumber = T9keypad[numberEntered.charAt(i) - ASCII_ZERO]; int len = q.size(); //loop while there are letter sequences in the queue. Note len-- is same as len=len-1 so loop until only one item left in queue (the blank item inserted above) while(len -- &gt; 0) { String letterSequenceFromQ = q.remove(); //loop through each letter on the keypad number, add it to the letter sequence pulled from queue and search for that letter sequence as a word in the trie for(int j = 0; j &lt; lettersOnKeypadNumber.length(); j++) { possibleWord = letterSequenceFromQ + lettersOnKeypadNumber.charAt(j); //q.add(tmpStr); if(search(possibleWord) &amp;&amp; possibleWord.length() == numberEntered.length()) { //found it! return possibleWords(possibleWord); } else { //letter sequence is not a word, add it to the queue for possible word when get the next set of letters for the next keyed number q.add(possibleWord); } } } } return null; } </code></pre>
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    1. USuser1835504
    1. USuser1835504
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      1. POHow to write this return statement so I don't return null?
      1. This table or related slice is empty.
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    2. VO
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      1. POHow to write this return statement so I don't return null?
      1. This table or related slice is empty.
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    1. COReturn an empty linked list?
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      1. POHow to write this return statement so I don't return null?
      1. USShark
    2. CO@Shark no, the method called within this method is returning a linked list also that I am trying to return.
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      1. POHow to write this return statement so I don't return null?
      1. USuser1835504
    3. COYes, but you could replace your `return null` with `return new LinkedList<>()`.
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      1. POHow to write this return statement so I don't return null?
      1. USDuncan Jones
 

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