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// require path
var path = require(“path”);

// require express and create express app
var express = require(“express”);
var app = express();

// Require body-parser …

In a JavaScript array, find the longest common prefix of all array elements.

function longestCommonPrefix(arr){
// sort() method …

db.schools.update( {name: “San Jose”}, {$push: {amenities:{$each: [“onsite dorm”, “cafeteria”, “pool”] } } } )

db.schools.update( {name: “San Jose”}, {$push: {amenities: “hot …

Query operators provide ways to locate data within the database and projection …

After installing MongoDB, below are some basic terminal commands.

Open a terminal window, become a root user, and do:
mongod …