I am trying to find a way to soolve this question using reducer
write a function called merge that takes one or more arrays as parameters and returns
the merged togerher with all dublicates removed and with the values sorted in ascending order
var a = ["alpha", "charlie", "delta"]
var b = ["bravo", "delta"]
var c = "["golf", "delta"]
var d = ["foxtrot", "delta", "echo", "alpha"]
merge(a,b) returns ["alpha", "bravo", "charlie", "delta"]
merge(a,b,c,d) returns ["alpha","bravo","charlie","delta","echo","foxtrot","golf"]
var a = ["alpha", "charlie", "delta"]
var b = ["bravo", "delta"]
var c = "["golf", "delta"]
var d = ["foxtrot", "delta", "echo", "alpha"]
function merge(...arr){
const mergedArr = [...arr];
const sortArr = mergetAr.sort();
const reducedArr = sortArr.reduce((arr, sortArr) => {
return
},[])
}
merge(a,b)
You can flatten the array and use Set to filter out the duplicates.
var a = ["alpha", "charlie", "delta"]
var b = ["bravo", "delta"]
function merge(...arr){
const sortArr = [...new Set(arr.flat())].sort();
console.log('sortArr', sortArr);
}
merge(a,b);Instead of directly taking the arguments, pass them in an array. That will allow you to loop through n number of arguments without any restriction as follows:
function merge(arrayOfArrays) {
const set = new Set(); // to remove duplicates
for (const array of arrayOfArrays) {
set.add(...array);
}
return [...set].sort();
}
Working snippet:
var a = ["alpha", "charlie", "delta"];
var b = ["bravo", "delta"];
var c = ["golf", "delta"];
var d = ["foxtrot", "delta", "echo", "alpha"];
function merge(arrayOfArrays) {
const set = new Set(); // to remove duplicates
for (let array of arrayOfArrays) {
array.forEach(item => set.add(item))
}
return [...set].sort();
}
console.log(merge([a, b, c, d]));The solution goes below.
var a = ["alpha", "charlie", "delta"]
var b = ["bravo", "delta"]
var c = ["golf", "delta"]
var d = ["foxtrot", "delta", "echo", "alpha"]
var all_array = a.concat(b).concat(c).concat(d); //combine all arrays
var uniq_array = [...new Set(all_array)]; // remove all duplicates
uniq_array = uniq_array.sort(); //soert the unique array in ascending order
console.log(uniq_array)