题目:​​原题链接​(中等)

标签:数组、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 ( N )

80ms (92.68%)

Ans 2 (Python)

Ans 3 (Python)

解法一:

class Solution:
def equalSubstring(self, s: str, t: str, maxCost: int) -> int:
size = len(s)

lst = []
for i in range(size):
lst.append(abs(ord(s[i]) - ord(t[i])))

ans = 0

left = 0
cost = 0
for right in range(size):
cost += lst[right]
right += 1
while cost > maxCost:
cost -= lst[left]
left += 1
ans = max(ans, right - left)

return ans