SOURCE

let arr= [1,2,1,11,2,3,5,5,6,4,5]
console.log(arr)

let arr1 = new Set(arr)
let ss = Array.from(arr1)


console.log(ss)

let arr2 = arr.sort((x,y)=>{return x-y})

let ar = arr2.reduce((acc,v)=>{
    if(acc.length===0 || acc[acc.length-1] !==v){
        acc.push(v)
    }
    return acc
},[])

console.log(ar)
console.log(arr)

// let sor = arr.sort((x,y)=>{
//     return y-x
// })

// console.log(sor)

// let re = arr.reverse()

// console.log(re)

let arrrr= [1,2,1,11,2,3,25,5,16,4,15]

let re = arrrr.reverse()

let asd = arr.reduce((item,v)=>{
    item.unshift(v)
    return item
},[])

console.log(asd)
console.log(re)