在C语言中,可以使用sort函数对vector进行排序。下面是一个示例代码: #include <stdio.h> #include <stdlib.h> // 比较函数,用于sort函数的第三个参数 int compare(const void *a, const void *b) { return (*(int*)a - *(int*)b); } int main() { int arr[] = {5, 2, 8, 1, 9}; int...
NanoVG - Antialiased 2D vector drawing library on top of OpenGL for UI and visualizations. [Zlib] Ogre 3D ⚡ - A scene-oriented, real-time, flexible 3D rendering engine (as opposed to a game engine) written in C++. [MIT] website OpenSceneGraph - An open source high performance 3D grap...
接口层是硬件驱动和上层软件之间一层抽象代码,屏蔽硬件的差异,为上层软件提供一些统一的操作接口。上层软件调用接口层的操作进行报文的读入与发出,同时...
这是因为sizeof(p)得到的是一个指针变量的字节数,相当于sizeof(char*),而不是p所指的内存容量。C++/C语言没有办法知道指针所指的内存容量,除非在申请内存时记住它。 char a[] = "hello world"; char *p = a; cout<< sizeof(a) << endl; // 12字节 cout<< sizeof(p) << endl; // 4字节 注...
flatbuffers_string_vec_t is a vector of strings. The flatbufers_string_t type guarantees that a length field is present using flatbuffers_string_len(s) and that the string is zero terminated. It also suggests that it is in utf-8 format according to the FlatBuffers specification, but not...
vector<int> f(n), ans; map<int, int> mp; for(int i = 0; i < n; i ++) {cin >> f[i]; } sort(all(f)); for(int i = 0; i < n; i ++) { int t = f[i]; for(int j = 1; j <= t / j; j ++) {
.isr_vector : { . = ALIGN(4); KEEP(*(.isr_vector)) /* Startup code */ . = ALIGN(4); } >FLASH /* The program code and other data into "FLASH" Rom type memory */ .text : { . = ALIGN(4); *(.text) /* .text sections (code) */ ...
阅读理解题,需要读懂题意,根据公式遍历寻找出现次数,注意精度,答案为11027421。 #include<cmath>#include<iostream>usingnamespacestd;intmain(){ios::sync_with_stdio(false);cin.tie(0);for(inti=0;i<=23333333;++i){if(fabs(11625907.5798+1.0*i*i/23333333*log2(1.0*i/23333333)+1.0*(23333333-i)*(23...
Vector是线程安全的 HashMap HashSet 是非线程安全 Hashtable是线程安全的 总结: synchronized三种写法 synchronized(线程共享对象){} 在实例方法上使用synchronized,表示共享对象一定是this,并且同步代码块是整个方法体 在静态方法上使用synchronized表示找类锁。类锁永远只有一把。对象锁:一个对象一把锁,100个对象100吧...
ferror inet_aton qsort srand callrpc xdr_vector fflush inet_lnaof radixsort srand48 clnt_broadcast xdr_void ffs inet_makeaddr raise srandom clnt_create xdr_wrapstring fgetc inet_netof rand sscanf clnt_pcreateerror xdrmem_create fgetln inet_network random stat clnt_perrno xdrrec_create fgetpos...