- 1.
class Solution:
def twoSum(self, nums: List[int], target: int) -> List[int]:
if not nums or len(nums) < 2:
return [-1,-1]
d = {}
for i,num in enumerate(nums):
remain = target - num
print(i,num)
if remain in d:
return [d[remain],i]
d[num] = i
return [-1,-1]