编辑代码

class Solution {
  List<int> twoSum(List<int> nums, int target) {
      for (int i=0; i< nums.length;i++) {
          int j=i;
          for (;j<nums.length;j++) {
              print("j = $j");
              int v1 = nums[i];
              int v2 = nums[j];
              print("v1($v2) === v2($v2)");
              if(v1+v2 == target) {
                return [v1,v2];
              }
          }
      }
      return [];
  }
}

void main() {
  print('Hello world!     - dart.jsrun.net');
  Solution solution = Solution();
  List list = <int>[2,7,11,15];
  List result = solution.twoSum(list,7);
  print("result = $result");
}