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Idiom #357 Swap elements of list

Swap the elements at indices i, j in the list items

items.swap(i, j)
items[i], items[j] = items[j], items[i]
import static java.util.Collections.swap;
swap(items, i, j);
classes
items.exchange(i,j);
items[i], items[j] = items[j], items[i]
items[i], items[j] = items[j], items[i]

items.swap(i, j);
New implementation...
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programming-idioms.org 
items.swap(i, j)
items[i], items[j] = items[j], items[i]
swap(items, i, j);
items.exchange(i,j);
items[i], items[j] = items[j], items[i]
items[i], items[j] = items[j], items[i]

items.swap(i, j);