preetb123

const s = "Dealing with failure is easy: Work hard to improve. Success is also easy to handle: You’ve solved the wrong problem. Work hard to improve"
function sumOfSentence(input: string){
  const vowels = new Set(['a','e','i','o','u'])
  let sum = 0;
  for(let i=0; i<input.length; i++){
    const character = input.charAt(i);
    const asciiValue = input.charCodeAt(i)
    if(asciiValue >= 65 && asciiValue <= 90 || asciiValue >= 97 && asciiValue <= 122){
      if(vowels.has(character.toLowerCase())){
        sum -= asciiValue;

preetb123

// given sorted array of numbers, find pair that sums to the target OR is closest to the target number

function findPair(a: number[], target: number): number[][]{
  let start = 0;
  let end = a.length - 1
  let result: number[][] = []
  // if we have two values that are at the same distance from the target, 
  // then array will contain both values, else it will only contain value that is nearer
  let nearByValues: number[][] = []
  let diff = Number.MAX_SAFE_INTEGER

preetb123

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preetb123

import React from "react";
import RX, { Text, Component, View, Modal } from "reactxp";
// import { App } from './App';
import { DEBUG, DEV } from "./config";

import Navigator, {
  NavigatorDelegateSelector as DelegateSelector,
  Types
} from "reactxp-navigation";

preetb123

# creates a deployment
apiVersion: apps/v1
kind: Deployment
metadata:
  name: gql-server-deployment
  labels:
    app: simple-graphql-server
spec:
  replicas: 3
  template:

preetb123

Install MongoDB on macOS Sierra

This procedure explains how to install MongoDB using Homebrew on macOS Sierra 10.12.
Official MongoDB install documentation: here

Install Homebrew

• Installing Homebrew is effortless, open Terminal and enter :
  $ /usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"

preetb123

import java.io.*;
import java.util.*;

public class Solution {

    public static void main(String[] args) {
        /* Enter your code here. Read input from STDIN. Print output to STDOUT. Your class should be named Solution. */
        Scanner scan = new Scanner(System.in);
        int noOfTestCases = scan.nextInt();
        int[][] input = new int[noOfTestCases][2];

preetb123

import java.io.*;
import java.util.*;

public class Solution {

    public static void main(String[] args) {
        /* Enter your code here. Read input from STDIN. Print output to STDOUT. Your class should be named Solution. */
        Scanner scan = new Scanner(System.in);
        int numTestCases = scan.nextInt();
        int[] input = new int[numTestCases];

preetb123

Studying for a Tech Interview Sucks, so Here's a Cheat Sheet to Help

This list is meant to be a both a quick guide and reference for further research into these topics. It's basically a summary of that comp sci course you never took or forgot about, so there's no way it can cover everything in depth. It also will be available as a gist on Github for everyone to edit and add to.

Data Structure Basics

###Array ####Definition:

• Stores data elements based on an sequential, most commonly 0 based, index.
• Based on tuples from set theory.

preetb123

/*
isValid('{{()}}') = true
isValid('{{(]]}') = false
isValid('(({{()}}))') = true
isValid('(({{(}}))') = false
isValid('(({{()()}}))') = true
*/

function isValid(expression){
  let stack = [];