let arr = [[1,2,2],[3,4,5,5],[6,7,8,9,[11,12,[12,13,[14]]]],10]
function del(arr){
let newArr = arr.flat(Infinity)
return [...new Set(newArr)]
}
console.log(del(arr))
let arr = [[1,2,2],[3,4,5,5],[6,7,8,9,[11,12,[12,13,[14]]]],10]
function del(arr){
let newArr = arr.flat(Infinity)
return [...new Set(newArr)]
}
console.log(del(arr))