Binary Tree Level Order Traversal 本题收获: 1.vector<vector<int>>的用法 vector<vector<int> >注意<int>后面的空格,vector<vector<int>>表示的是二位向量. 输出格式(后面代码),不知道大小时,在vector中用push_back(vector<int>()) 2.树用迭代 题目: Given a binary tr
题目 Zhejiang University has 40000 students and provides 2500 courses. Now given the student name lists of all the courses, you are supposed to output the registered course list for each student who comes for a query. Input Specification: Each input fi
Given two arrays, write a function to compute their intersection. Example:Given nums1 = [1, 2, 2, 1], nums2 = [2, 2], return [2]. Note: Each element in the result must be unique. The result can be in any order. 这道题让我们找两个数组相同的部分,难度不算大,我们可以用个set把nums1都
Given two arrays, write a function to compute their intersection. Example:Given nums1 = [1, 2, 2, 1], nums2 = [2, 2], return [2]. Note: Each element in the result must be unique. The result can be in any order. Subscribe to see which companies asked
Given two arrays, write a function to compute their intersection.Notice Each element in the result should appear as many times as it shows in both arrays. The result can be in any order. Example Given nums1 = [1, 2, 2, 1], nums2 = [2, 2], return [
Given two arrays, write a function to compute their intersection.Notice Each element in the result must be unique. The result can be in any order. Have you met this question in a real interview?Example Given nums1 = [1, 2, 2, 1], nums2 = [2, 2], r