[DAY 34] Left Rotation

A left rotation operation on an array of size n shifts each of the array's elements 1 unit to the left. For example, if 2 left rotations are performed on array [1,2,3,4,5], then the array would become [3,4,5,1,2].

Given an array of n integers and a number, d, perform d left rotations on the array. Then print the updated array as a single line of space-separated integers.

 

Left Rotation | HackerRank

 

풀이

function main() {
    const nd = readLine().split(' ');
    const n = parseInt(nd[0], 10);
    const d = parseInt(nd[1], 10);
    const a = readLine().split(' ').map(aTemp => parseInt(aTemp, 10));

    let temp = a.slice(0, d);
    a.splice(0, d);
    console.log(a.concat(temp).join(" ")); 
}