算法-寻找两个正序数组的中位数

class Solution:    def findMedianSortedArrays(self, nums1: List[int], nums2: List[int]) -> float:        if len(nums1) > len(nums2):            nums1, nums2 = nums2, nums1        m, n = len(nums1), len(nums2)        left, right = 0, m        while left <= right:            i = (left + right) // 2            j = (m + n + 1) // 2 - i            if i < m and nums2[j-1] > nums1[i]:                left = i + 1            elif i > 0 and nums1[i-1] > nums2[j]:                right = i - 1            else:                if i == 0:                    max_left = nums2[j-1]                elif j == 0:                    max_left = nums1[i-1]                else:                    max_left = max(nums1[i-1], nums2[j-1])                if (m + n) % 2 == 1:                    return max_left                if i == m:                    min_right = nums2[j]                elif j == n:                    min_right = nums1[i]                else:                    min_right = min(nums1[i], nums2[j])                return (max_left + min_right) / 2