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Diffstat (limited to 'other/longest_valid_course.cpp')
-rw-r--r-- | other/longest_valid_course.cpp | 49 |
1 files changed, 0 insertions, 49 deletions
diff --git a/other/longest_valid_course.cpp b/other/longest_valid_course.cpp deleted file mode 100644 index 87f07a6..0000000 --- a/other/longest_valid_course.cpp +++ /dev/null @@ -1,49 +0,0 @@ -// 1964. Find the Longest Valid Obstacle Course at Each Position -#include "leetcode.h" - -/* - * you want to build obstacle courses. you are given a 0-indexed integer array - * 'obstacles' of length 'n' where 'obstacles[i]' describes the height of the - * i'th obstacle. for every index 'i' between 0 and 'n - 1' (inclusive), find - * the length of the longest obstacle course in 'obstacles' such that: - * - you choose any number of obstacles between 0 and 'i' inclusive - * - you must include the i'th obstacle in the course - * - you must put the chosen obstacles in the same order as they appear in - * 'obstacles' - * - every obstacle (except the first) is taller than or the same height as the - * obstacle immediately before it return an array 'ans' of length 'n', where - * 'ans[i]' is the length of the longest obstacle course for index 'i' as - * described aboveeeeeeeee - */ - -class Solution { -public: - vector<int> longestObstacleCourseAtEachEachPosition(vector<int> &obstacles) { - vector<int> n; - for (int i = 0; i < obstacles.size(); ++i) { - auto it = upper_bound(n.begin(), n.end(), obstacles[i]); - if (it == n.end()) { - n.push_back(obstacles[i]); - it = prev(n.end()); - } else { - *it = obstacles[i]; - } - obstacles[i] = it - n.begin() + 1; - } - return obstacles; - } -}; - -int main() { - Solution obj; - vector<int> o1 = {1, 2, 3, 2}, o2 = {2, 2, 1}, o3 = {3, 1, 5, 6, 4, 2}; - for (auto i : obj.longestObstacleCourseAtEachEachPosition(o1)) - printf("%d ", i); // expect: 1 2 3 3 - printf("\n"); - for (auto i : obj.longestObstacleCourseAtEachEachPosition(o2)) - printf("%d ", i); // expect: 1 2 1 - printf("\n"); - for (auto i : obj.longestObstacleCourseAtEachEachPosition(o3)) - printf("%d ", i); // expect: 1 1 2 3 2 2 - printf("\n"); -} |