5923. 从房屋收集雨水需要的最少水桶数

https://leetcode-cn.com/problems/minimum-number-of-buckets-required-to-collect-rainwater-from-houses/

• 提交时间:2021-11-28 05:18:17
• 执行用时：12 ms, 在所有 Go 提交中击败了100.00%的用户
• 内存消耗：6.2 MB, 在所有 Go 提交中击败了100.00%的用户
• 通过测试用例：207 / 207

func minimumBuckets(street string) (ans int) {
    n := len(street)
    if street == "." {
        return 0
    }
    if street == "H" {
        return -1
    }
    if strings.Contains(street, "HHH") {
        return -1
    }
    if street[0] == 'H' && street[1] == 'H' {
        return -1
    }
    if street[n-1] == 'H' && street[n-2] == 'H' {
        return -1
    }
    street = strings.Replace(street, "H.H", "hBh", -1)
    street = strings.Replace(street, ".H", "Bh", -1)
    street = strings.Replace(street, "H.", "hB", -1)
    return strings.Count(street, "B")
}