Hackerrank (Arrays: Left Rotation)

left_rotation.js

function main() {
    var n_temp = readLine().split(' ');
    var n = parseInt(n_temp[0]);
    var k = parseInt(n_temp[1]);
    a = readLine().split(' ');
    a = a.map(Number);
    
    var i = k;
    
    if (k > n) {
        i = k % n;
    }
    
    console.log([a.splice(i, n).join(' ')].concat(a).join(' '));
}