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
        hash={}
        for i in range(len(numbers)):  # 3   2     4
            s=target-numbers[i]    # 6-3=3     6-2=4     6-4=2
            if s in hash:
                result=hash[s]
                return [result+1,i+1]   #[1,2]
            else:        #{3:1,2:2,}
                hash[numbers[i]]=i
        return []