05-structuras

const a = [1,2,3,4,5,6]
a.filter(v=>v%2===0) [2,4,6]
a.find(v=>v%2===0) //2
a.sort
a.map(v=>v*v)
a.reduce((a,v)=>a+v,100)

    0+1=1
    1+2=3
    3+3=6
    6+4=10
    10+5=15
    15+6=21

    function filter(array,predicate){
        const newArray = []
        for(const value of array){
            if(predicate(value)){
                newArray.push(value)
            }
        }
        return newArray;
    }


    const map = new Map();

    map.set("key", 1)
    map.get("key")
    

    const set = new Set([1,2,3,3,4,4,5])