Problem Solving in Funtional Programming Way - Sep 16, 2016

HackerRank - Circular Array Rotation

//https://www.hackerrank.com/challenges/circular-array-rotation
function processData(input) {
    var inputSplit = input.split("\n");
    var n = Number(inputSplit[0].split(" ")[0]);
    var k = Number(inputSplit[0].split(" ")[1]);
    var q = Number(inputSplit[0].split(" ")[2]);
    
    var arr = inputSplit[1].split(" ").map(Number);
    var newArr = (Array(k).fill()).reduce(function(memo, item) {
         var ele = memo.pop();
         memo.unshift(ele);
         return memo;
    }, arr.slice(0));
    
    
    var results = inputSplit.slice(2).map(function(item) {
        return newArr[Number(item)];
    });
    
    console.log(results.join("\n"));
} 



process.stdin.resume();
process.stdin.setEncoding("ascii");
_input = "";
process.stdin.on("data", function (input) {
    _input += input;
});

process.stdin.on("end", function () {
   processData(_input);
});

HackerRank - Compare the Triplets

// https://www.hackerrank.com/challenges/compare-the-triplets

process.stdin.resume();
process.stdin.setEncoding('ascii');

var input_stdin = "";
var input_stdin_array = "";
var input_currentline = 0;

process.stdin.on('data', function (data) {
    input_stdin += data;
});

process.stdin.on('end', function () {
    input_stdin_array = input_stdin.split("\n");
    main();    
});

function readLine() {
    return input_stdin_array[input_currentline++];
}

/////////////// ignore above this line ////////////////////

function main() {
    var a0_temp = readLine().split(' ');
    var a0 = parseInt(a0_temp[0]);
    var a1 = parseInt(a0_temp[1]);
    var a2 = parseInt(a0_temp[2]);
    var b0_temp = readLine().split(' ');
    var b0 = parseInt(b0_temp[0]);
    var b1 = parseInt(b0_temp[1]);
    var b2 = parseInt(b0_temp[2]);
    
    function getScore(a, b) {
        if (a > b) return [1, 0];
        if (a < b) return [0, 1];
        if (a == b) return [0, 0];
    }
    
    var scores = [getScore(a0, b0), getScore(a1, b1), getScore(a2, b2)];
    scores = scores.reduce(function (memo, score) {
        memo[0] += score[0];
        memo[1] += score[1];
        return memo;
    }, [0, 0]);
    
    console.log(scores.join(" "));
}