题目:​​原题链接​(中等)

标签:数组、双指针、滑动窗口

解法

时间复杂度

空间复杂度

执行用时

Ans 1 (Python)

O ( N )

O ( 1 )

1160ms (17.70%)

Ans 2 (Python)

Ans 3 (Python)

解法一:

class Solution:
def totalFruit(self, tree: List[int]) -> int:
ans = 0

l, r = 0, 0
window = collections.Counter()
while r < len(tree):
window[tree[r]] += 1
while len(window) > 2:
window[tree[l]] -= 1
if window[tree[l]] == 0:
window.pop(tree[l])
l += 1
ans = max(ans, r - l + 1)
r += 1

return ans