ExchangeIfGreater

let input = ['5', '2'];
// let input = ['3', '4'];
// let input = ['5.5', '4.5'];

let print = this.print || console.log;
let gets = this.gets || ((arr, index) => () => arr[index++])(input, 0);

let a = Number(gets());
let b = Number(gets());

if ( a > b){
    let temp = a;  // the temporary variable that kept a-value
    a = b;
    b = temp;
}

print(`${a} ${b}`)  // OUTPUT => 2 5