Java使用循环从数组中删除重复项

Question

This is my current attempt to remove duplicates from an array holding integers, but this does not give me any results. It simply prints out nothing. Any help would be greatly appreciated.

    public static void duplicate(int numbers[], int size)
    {
      for (int i = 0; i < size; i++){
        boolean duplicate = false;
        int b = 0;
        while (b < i){
          if (numbers[i] == numbers[b])
             duplicate = true;
          b++;}
        if (duplicate = false)
          System.out.print(numbers[i] + " ");}
    } 

Answer 1

Try this:

public static void duplicate(int numbers[], int size)
{
  for (int i = 0; i < size; i++){
    boolean duplicate = false;
    int b = 0;
    while (b < i){
      if (numbers[i] == numbers[b])
         duplicate = true;
      b++;}
    if (duplicate == false)
      System.out.print(numbers[i] + " ");}
} 

You need to use == not = in your if statement.

Answer 2

You can also make use of HashSet or LinkedHashSet to Preserve the ordering

public void removeDupInIntArray(int[] ints){
    Set<Integer> setString = new LinkedHashSet<Integer>();
    for(int i=0;i<ints.length;i++){
        setString.add(ints[i]);
    }
    System.out.println(setString);
}

Answer 3

最好的选择是使用Sets（Hash Linkedhash），从而避免重复