How to get unique numbers from two lists in dart?-CodePudding

void main() {
  List<int> x = [1,4,3,6];
  List<int> y = [3,6,9,10,2];
  
  var List<int> output = [];

  print(output);
}

CodePudding user response：

I don't know what exactly "unique numbers" mean in your context. I guest "unique numbers" from list x an y mean the numbers which are in x or in y.
Example: x = [1, 2, 3], y = [2, 3, 4], the output is [1, 2, 3, 4]
or x = [3, 4, 5] and y = [5, 6, 7] => ouput = [3, 4, 5, 6, 7]
If this is the result you want to archive, you can consider following code:

void main() {
    List<int> x = [1,4,3,6];
    List<int> y = [3,6,9,10,2];
    List<int> output = x.toSet().union(y.toSet()).toList();
    print(output);
}

output:

[1, 4, 3, 6, 9, 10, 2]

CodePudding user response：

I am javascript developer but that would help you

Var uniqueArray =list1.filter(function(obj){return list2.indexOf(obj)== -1;})