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 vote137 views1 answer
Spring.jpa.properties.hibernate.dialect values
Java Spring
7 votes119 views2 answers
Java split long into array
Java
0 vote109 views5 answers
Comment in Java
Java
0 vote123 views1 answer
Reverse sentence in java
Java
0 vote252 views1 answer
List class type java
Java
7 votes113 views1 answer
Java insert into arraylist
Java
0 vote111 views2 answers
Constraints in grails
Java
1 vote112 views1 answer
Attempt to invoke virtual method 'int java.util.Random.nextInt(int)' on a null object reference
Java
1 vote111 views1 answer
Discord jda get message by id
Java
3 votes106 views1 answer
Javafx center node in gridpane
Java