Given two sorted arrays nums1 and nums2 of size m and n respectively, return the median of the two sorted arrays. The overall run time complexity should be O(log (m+n)). Example 1: **Input:** nums1 = ...

Given an integer array nums, find the sum of the elements between indices i and j ( i ≤ j), inclusive. The update(i, val) function modifies nums by updating the element at index i to val. 这道题是之前那道 ...