Reading Space

const array = [{
    
    tweet: 'hi',
    date: 2012
},
{ 
    tweet: 'my'
    ,date:2014
    
},{
    tweet:'teddy'
    ,date:2018
    
}];

//O(n^2)

console.log("Ryan".length); //O(1) in Javascript 
console.log(array[0]); //O(1)
array[array.length-1]; // O(1)