1.两数之和
from typing import List
class Solution:
def twoSum(self, nums: List[int], target: int) -> List[int]:
"""
【空间换时间】
哈希表解法,将值与下标存在哈希表内,遍历时拿和值-当前值=目标值
再判断目标值是否存在哈希表中,如果存在直接返回
Args:
nums (List[int]): _description_
target (int): _description_
Returns:
List[int]: _description_
"""
map = {}
for index, value in enumerate(nums):
result = target - value
if result in map:
return [map[result], index]
map[value] = index
return []
print(Solution().twoSum([3, 3], 6))
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