STL提供的函数upper_bound, lower_bound能够快速找到这样的j的范围,因为set有序范围内的一定满足上面的条件. set使用红黑树来实现,因此上面的操作时间复杂度O(logN). 所以总的时间复杂度为O(NlogN). **/intLeetCode::countRangeSum(vector<int>& nums,intlower,intupper){ multiset<longlong>sums;//注意使用l...
LightOJ 1122 - Digit Count Given a set of digits S, and an integer n, you have to find how many n-digit integers are there, which contain digits that belong to S and the difference between any two adjacent digits is not more than two. Input Input starts with an integer T (≤ 300)...
3676-smallest-number-with-all-set-bits 3677-maximum-amount-of-money-robot-can-earn 3678-design-task-manager 3681-maximum-area-rectangle-with-point-constraints-i 3683-find-the-lexicographically-largest-string-from-the-box-i 3686-count-beautiful-splits-in-an-array 3692-shortest-matching-substring 3...
A set of practice note, solution, complexity analysis and test bench to leetcode problem set - leetcode/CountSubArrayFixBound.drawio at b58bcceb0ea27d0756ad72fb6a64b3b547fae221 · brianchiang-tw/leetcode