题解 | 两数之和

#
# 代码中的类名、方法名、参数名已经指定，请勿修改，直接返回方法规定的值即可
#
# 
# @param numbers int整型一维数组 
# @param target int整型 
# @return int整型一维数组
#
class Solution:
    def twoSum(self , numbers: List[int], target: int) -> List[int]:
        # write code here
        num_dict = {}
        for i in range(len(numbers)):
            c = target - numbers[i]
            if c in num_dict :
                return [numbers[i],i]
            num_dict[numbers[i]] = i
        return []