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模拟卷Leetcode【普通】201. 数字范围按位与

腊梅5朵 2022-02-15 阅读 60

201. 数字范围按位与

给你两个整数 left 和 right ,表示区间 [left, right] ,返回此区间内所有数字 按位与 的结果(包含 left 、right 端点)。

示例 1:

输入:left = 5, right = 7
输出:4
示例 2:

输入:left = 0, right = 0
输出:0
示例 3:

输入:left = 1, right = 2147483647
输出:0

提示:

0 <= left <= right <= 231 - 1

代码:

from leetcode_python.utils import *


class Solution:
    def __init__(self):
        pass

    def rangeBitwiseAnd(self, left: int, right: int) -> int:
        while left < right: right &= (right - 1)
        return right


def test(data_test):
    s = Solution()
    data = data_test  # normal
    # data = [list2node(data_test[0])]  # list转node
    return s.rangeBitwiseAnd(*data)


def test_obj(data_test):
    result = [None]
    obj = Solution(*data_test[1][0])
    for fun, data in zip(data_test[0][1::], data_test[1][1::]):
        if data:
            res = obj.__getattribute__(fun)(*data)
        else:
            res = obj.__getattribute__(fun)()
        result.append(res)
    return result


if __name__ == '__main__':
    datas = [
        [],
    ]
    for data_test in datas:
        t0 = time.time()
        print('-' * 50)
        print('input:', data_test)
        print('output:', test(data_test))
        print(f'use time:{time.time() - t0}s')

备注:
GitHub:https://github.com/monijuan/leetcode_python

CSDN汇总:模拟卷Leetcode 题解汇总_卷子的博客-CSDN博客

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