题目:

题解:
python
class Solution:
def twoSum(self, numbers: List[int], target: int) -> List[int]:
low, high = 0, len(numbers) - 1
while low < high:
total = numbers[low] + numbers[high]
if total == target:
return [low + 1, high + 1]
elif total < target:
low += 1
else:
high -= 1
return [-1, -1]