题目:原题链接(中等)
标签:哈希表
解法 | 时间复杂度 | 空间复杂度 | 执行用时 |
Ans 1 (Python) | O ( N ) | O ( N ) | 924ms (97.76%) |
Ans 2 (Python) | |||
Ans 3 (Python) |
解法一:
class Solution:
def findMaxLength(self, nums: List[int]) -> int:
hashmap = {0: -1}
ans = 0
differ = 0 # 1比0多的数量
for i, n in enumerate(nums):
if n == 0:
differ -= 1
else:
differ += 1
if differ in hashmap:
ans = max(ans, i - hashmap[differ])
else:
hashmap[differ] = i
return ans