値の交換

コード例

C++

int a = 3, b = 99;
swap(a, b);
cout << a << " " << b << endl;  // 99 3

vector<int> v = {111, 222, 333};
swap(v[0], v[2]);

for (auto x : v) {
  cout << x << endl;  // 333 222 111
}

TypeScript

let a = 3;
let b = 99;
[a, b] = [b, a];
console.log(a, b); // 99 3

const v = [111, 222, 333];
[v[0], v[2]] = [v[2], v[0]];
console.log(v); // [333, 222, 111]