Challengs-31.js

// Write a function that takes two or more arrays and returns a new array of unique values in the order of the original provided arrays.

// In other words, all values present from all arrays should be included in their original order, but with no duplicates in the final array.

// The unique numbers should be sorted by their original order, but the final array should not be sorted in numerical order.

// Check the assertion tests for examples.




// #solution

function uniteUnique(...arr) {
  return arr.reduce((acc,innerArr)=>{
    innerArr.map(item=>{
      if(!acc.includes(item)){
        acc.push(item)
      }
    })
    return acc
    },[])
}

console.log(uniteUnique([1, 3, 2], [5, 2, 1, 4], [2, 1]));