Hackerrank Warmup Challenge - Circular Array Rotation

CircularRotation.js

function processData(input) {
    let lines = input.split('\n');
    let arr = lines[1].split(' ');
    let k = lines[0].split(' ')[1]; // No of spins
    let n = arr.length;
    
    for (var i = 2, l = lines.length; i < l; i++) { // First two lines are for k, n and arr so let's skip em
        let pos = (n + (lines[i] - (k % n))) % n; // This does the magic! 
        console.log(arr[pos]);
    }
}