Array.swap java

Java array swap

public static void swap(int x, int y, int[] arr) {
  	int temp = arr[x];
  	arr[x] = arr[y];
  	arr[y] = temp;
}

Array.swap java

public static final <T> void swap (T[] a, int i, int j) {
  T t = a[i];
  a[i] = a[j];
  a[j] = t;
}

public static final <T> void swap (List<T> l, int i, int j) {
  Collections.<T>swap(l, i, j);
}

private void test() {
  String [] a = {"Hello", "Goodbye"};
  swap(a, 0, 1);
  System.out.println("a:"+Arrays.toString(a));
  List<String> l = new ArrayList<String>(Arrays.asList(a));
  swap(l, 0, 1);
  System.out.println("l:"+l);
}

Source: stackoverflow.com

Similar codes

0 vote299 views1 answer
Stringbuilser
Java
1 vote266 views1 answer
Java example
Java
1 vote303 views3 answers
Convert from java to kotlin online
Java
0 vote273 views1 answer
Remove whitespaces
Java
1 vote282 views1 answer
How to deselect radio button in java
Java
5 votes299 views1 answer
Change color of text in textview android
Java
1 vote280 views2 answers
Unique elements in array java
Java
1 vote286 views1 answer
Java get all items from arraylist
Java
0 vote279 views1 answer
Create thread
Java
1 vote273 views1 answer
Valueof in java
Java