LeetCode 1-两数之和
语言:python 思路:字典,key : value=目标整数-数组中某项 : 数组中该项索引 好处是查找时间复杂度O(1),空间消耗大一些
class Solution(object):
def twoSum(self
, nums
, target
):
"""
:type nums: List[int]
:type target: int
:rtype: List[int]
"""
dic
={}
for i
in range(len(nums
)):
dic
[target
-nums
[i
]]=i
for j
in range(len(nums
)):
if nums
[j
] in dic
and j
!=dic
[nums
[j
]]:
'''
依题意“不能重复使用数组内元素”
此处如果不加入and之后的语句,会出现逻辑漏洞,
对于输入nums=[3,2,4],target=6,会返回[0,0]而非[2,4]
'''
return j
,dic
[nums
[j
]]
转载请注明原文地址: https://mac.8miu.com/read-508586.html