arraylist

问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 6 years ago . I have an ArrayList and I want to start iterating through it from, say, index 100 to the end. How do I do that? 回答1: There are many ways to do this. In this examples I assume your list holds Integers. You can use ListIterator ListIterator<Integer> it = list.listIterator(100); while (it.hasNext()) { System.out

问题 My question is similar to this one Add elements to Arraylist and it replaces all previous elements in Java . Though my variables are not static. Still everytime I add one, the other values will be that value. Important code: int counter = 1; // Threshold the image to get a binary image image.threshold(44); image.showImage(); int[] directionFIRST = new int[2]; // Get the first white pixel on the boundary int[] pixelFIRST = image.getFirstBoundaryPixel(); image.updatePicture(pixelFIRST[0],

问题 I am passing ArrayList<Custom implements Parcelable> myList to an Intent. Both of the following ways seem to work fine with putting the ArrayList into the new Intent. results.putParcelableArrayListExtra("list", myList); results.putExtra("list", myList); When I check mIntent/mExtras/mMap/table it is everything there. But in the onCreate method of the intent some of that data seems to be lost. I am getting the ArrayList then with myList = (ArrayList<Custom>) this.getIntent()

问题 In my program users input words along with their corresponding definition. An example of this user defined object is [countenance, a person's face]. The user's words are stored in an array list which works with file i/o. However, each time I call the "prepareTable" method, the program adds duplicates of the words found in the text file to the array list. If you need to see more code, I can post it but for convenience/readability I only posted the prepareTable method. Why is my program

问题 I have some problem with my Java code. I'm supposed to use loops and not any other method. Say that my ArrayLis t contains of [Dog Cat Dog Dog Cat Dog Horse] My goal is also to remove the copies of Dog and Cat so my final results equals [Dog Cat Horse] public void removeDouble(){ int counter = 0; for (int i = 0 ; i < animals.size(); i++) { for (int j = 1+i; j < animals.size() ; j++) //don't start on the same word or you'll eliminate it. if ( animals.get(j).equals( animals.get(i) ) ) { animals

问题 I have some problem with my Java code. I'm supposed to use loops and not any other method. Say that my ArrayLis t contains of [Dog Cat Dog Dog Cat Dog Horse] My goal is also to remove the copies of Dog and Cat so my final results equals [Dog Cat Horse] public void removeDouble(){ int counter = 0; for (int i = 0 ; i < animals.size(); i++) { for (int j = 1+i; j < animals.size() ; j++) //don't start on the same word or you'll eliminate it. if ( animals.get(j).equals( animals.get(i) ) ) { animals

问题 I have some problem with my Java code. I'm supposed to use loops and not any other method. Say that my ArrayLis t contains of [Dog Cat Dog Dog Cat Dog Horse] My goal is also to remove the copies of Dog and Cat so my final results equals [Dog Cat Horse] public void removeDouble(){ int counter = 0; for (int i = 0 ; i < animals.size(); i++) { for (int j = 1+i; j < animals.size() ; j++) //don't start on the same word or you'll eliminate it. if ( animals.get(j).equals( animals.get(i) ) ) { animals

问题 I have list of files stored inside arraylist that I need to download in background thread. My initial thought is that AsyncTask should be up for that task. But, I have a problem, I don't know how to supply my list to doInBackground method. My arraylist is defined as private ArrayList<String> FilesToDownload = new ArrayList<String>(); My DownloadFiles subclass (the way it is written now) should be called with: new DownloadFiles().execute(url1, url2, url3, etc.); This is not suitable for me

问题 Is there a way to ignore the case for the contains() method but at the same time leave the code snippet more or less the same? /** * This method returns a list of all words from the dictionary that include the given substring. * */ public ArrayList<String> wordsContaining(String text) { int index = 0; ArrayList<String> wordsContaining = new ArrayList<String>(); while(index<words.size()) { if((words.get(index).contains(text))) { wordsContaining.add(words.get(index)); } index++; } return

问题 this is the json that my code produces { "aaa":1, "b":2, "c":3, "d":4, "e":5, "fff":{"a":11111,"b":222222,"c":33333,"d":444454,"e":55555555} } and this is the code <?php $c = array('a' => 11111, 'b' => 222222, 'c' => 33333, 'd' => 444454, 'e' => 55555555 ); $arr = array('aaa' => 1, 'b' => 2, 'c' => 3, 'd' => 4, 'e' => 5 , 'fff'=>$c); echo json_encode($arr); ?> but I want to have some structure like this { "aaa":1, "b":2, "c":3, "d":4, "e":5, "fff":{"a":11111,"b":222222,"c":33333,"d":444454,"e