unique(vector1.begin(),vector1.end()) unique就是让连续的相同值变成一个 binary_search (v.begin(), v.end(), 6, myfunction) bool myfunction (int i,int j) { return (i<j); } reverse(vector1.begin(),vector1.end()) find (myvector.begin(), myvector.end(), 30); An iterator to...
vector<CD>nums{{1,1},{2,3},{4,2},{4,3}};autocmpz=[](CD x, CD y){returnabs(x)<abs(y);};#ifdef __cpp_lib_algorithm_default_value_typeassert(std::binary_search(nums.cbegin(), nums.cend(),{4,2}, cmpz));#elseassert(std::binary_search(nums.cbegin(), nums.cend(), ...
Givenn, how many structurally unique BST's (binary search trees) that store values 1...n? For example, Givenn= 3, there are a total of 5 unique BST's. 1 3 3 2 1 \ / / / \ \ 3 2 1 1 3 2 / / \ \ 2 1 2 3 代码: classSolution {public:intnumTrees(intn) { vector<...
master learn_cpp/chapter_3/3.4Iterator/iterator_binary_search.cpp Go to file 57 lines (36 sloc) 586 Bytes Raw Blame #include <vector> #include <iterator> #include <string> #include <iostream> using std::vector; using std::string; using std::cout; using std::endl; int main ()...
begin() : std::cout << to_find << " 没有找到"; std::cout << '\n'; } using CD = std::complex<double>; std::vector<CD> nums{{1, 0}, {2, 2}, {2, 1}, {3, 0}}; auto cmpz = [](CD x, CD y) { return x.real() < y.real(); }; #ifdef __cpp_lib_...
begin()) << '\n'; std::vector<std::complex<double>> nums2{{4, 2}, {4, 2}, {1, 3}}; #ifdef __cpp_lib_algorithm_default_value_type auto it = ranges::search_n(nums2, 2, {4, 2}); #else auto it = ranges::search_n(nums2, 2, std::complex<double>{4, 2}); #...
vector 数组 随机读改、尾部插入、尾部删除 O(1)头部插入、头部删除 O(n) 无序 可重复 支持随机访问 deque 双端队列 头尾插入、头尾删除 O(1) 无序 可重复 一个中央控制器 + 多个缓冲区,支持首尾快速增删,支持随机访问 forward_list 单向链表 插入、删除 O(1) 无序 可重复 不支持随机访问 list 双向链表...
vector 一种可动态扩容的单端数组类型(类模板); - 迭代器支持随机访问; - 通过复制到新的内存空间实现; - 可参考:runoob.com/w3cnote/cpp- - capacity表示容量大小(并未实际分配内存),size表示内存大小; - swap函数实现两vector互换,若想将capacity设置为size,可利用vector<int>(v).swap(v);,达到收缩内存的...
// CBOR byte string with payload 0xCAFE std::vector<std::uint8_t> v = {0x42, 0xCA, 0xFE}; // read value json j = json::from_cbor(v); // the JSON value has type binary j.is_binary(); // true // get reference to stored binary value auto& binary = j.get_binary(); /...
BinaryTree { public: BinaryTree(); BinaryTree(int val); ~BinaryTree(); //N为节点总数 //1 获取树的高度,O(N) int height(); //2 前序/中序/后序/层序遍历,O(N) std::vector<int> Traversal(enum TraversalFlag flag); //3 DFS应用1:树的查找,O(N) TreeNodeBinary* find(int val); /...