rakibulalam

/*stack solutions*/
function isBalanced(s) {
const brackets={'{':'}','(':')','[':']'};
const arr=s.split('');
const stack=[];
/* if the length is odd*/
if(arr.length%2!==0) return 'NO';

for(let i=0; i<arr.length; i++)
{

rakibulalam

/**
* Descending based Priority Queue with less complexity
**/

class PriorityQueue {
	constructor() {
		this.queue = [];
	}
	enqueue(element) {
        this.queue=[...this.queue, element].sort(([ v, p ], [ v1, p1 ]) => p1 - p);

rakibulalam

function countingValleys(n, s) {
    let level=0,vally=0;
    for(let i=0; i<=n; i++)
    {
       if(s[i]==='D')
       {
           --level
       }else if(s[i]==='U'){
           if(++level===0) vally++;
       }

rakibulalam

function sockMerchant(n, ar) {
    const pairs={};
    return ar.reduce((memo,value)=>{
        if(pairs.hasOwnProperty(value))
        {
            pairs[value]=pairs[value]+1;
            memo+=pairs[value]%2===0?1:0
        }else{
            pairs[value]=1
        }

rakibulalam

function maxMin(k, arr) {

    const sortArray=arr.sort((a,b)=>a-b);
    const lengthArray=sortArray.length;
    let unfairValue=Infinity;
    for(let i=0; i<=lengthArray-k; i++)
    {
        const groupArray=sortArray.slice(i,i+k);
        const value=groupArray[k-1]-groupArray[0];
        unfairValue=unfairValue<value?unfairValue:value;

rakibulalam

function getMinimumCost(k, c) {
        return c.sort((a,b)=>b-a).reduce((memo,value,key)=>{
            const i=Math.floor(key/k);
            memo+=(i+1)*value;
            return memo;
        },0)

}

rakibulalam

function luckBalance(k, contests) {
return contests.sort(([a,x],[b,y])=>y-x || b-a)
        .reduce((memo,[l,t],key)=>{
            memo += t===1 && key<k? l: t===1 && key>=k?-l:l
            return memo;
        },0)

}

rakibulalam

static httpBuildQuery(data = {}) {
		return Object.keys(data)
			.map((k) => {
				return encodeURIComponent(k) + '=' + encodeURIComponent(data[k]);
			})
			.join('&');
	}

rakibulalam

import React from 'react';
import ExecutionEnvironment from 'exenv';

/*
* Author: Md. Rakibulalam
* Dependencies : npm install --save exenv
* If you want to exclude render dom releated components from server side render 
*/
export default (WrappedComponent) => {
	const hocComponent = ({ ...props }) => {

rakibulalam

for (var sum = 0, i = 0, j = 1, k = 2; 4e6 > j + k; i++) i = j + k, j = k, k = i, sum += 0 == i % 2 ? i : 0;

result: '4613730'