TensorFlow+Keras环境搭建避坑指南:本地与Kaggle双端实操
2026/10/21 0:37:52
这是一个用C语言实现的综合性算法和数据结构库,收集了从基础到高级的多种算法实现。项目遵循GPLv3许可证,覆盖计算机科学、数学统计、数据科学、机器学习、工程学等多个领域的算法。
该项目的主要目标是提供一个教育性的资源,帮助学习者和开发者理解算法和数据结构的原理与实现。所有代码都经过精心设计和测试,确保正确性和可读性。
gitclone https://github.com/TheAlgorithms/C.gitcdCgcc -o algorithm_name algorithm_file.c./algorithm_name以下是几个核心算法的使用示例:
#include<stdio.h>#include"audio/alaw.c"intmain(){int16_tpcm[]={1000,-1000,1234,3200};uint8_talaw[4];int16_tdecoded[4];// 编码encode(alaw,pcm,4);// 解码decode(decoded,alaw,4);return0;}#include<stdio.h>#include"cipher/affine.c"intmain(){chartext[]="Hello World!";affine_key_tkey={7,11};printf("原始文本: %s\n",text);// 加密affine_encrypt(text,key);printf("加密后: %s\n",text);// 解密affine_decrypt(text,key);printf("解密后: %s\n",text);return0;}#include<stdio.h>#include"data_structures/binary_trees/basic_operations.c"intmain(){structnode*root=NULL;// 插入节点root=insert(root,50);root=insert(root,30);root=insert(root,20);root=insert(root,40);root=insert(root,70);root=insert(root,60);root=insert(root,80);// 中序遍历printf("中序遍历: ");inOrderTraversal(root);return0;}项目中的主要数据结构API包括:
/** * @brief 16bit pcm to 8bit alaw * @param out unsigned 8bit alaw array * @param in signed 16bit pcm array * @param len length of pcm array * @returns void */voidencode(uint8_t*out,int16_t*in,size_tlen){uint8_talaw=0;int16_tpcm=0;int32_tsign=0;int32_tabcd=0;int32_teee=0;int32_tmask=0;for(size_ti=0;i<len;i++){pcm=*in++;eee=7;mask=0x4000;// 0x4000: '0b0100 0000 0000 0000'// 获取符号位sign=(pcm&0x8000)>>8;// 将负数转换为正数进行处理pcm=pcm<0?(~pcm>>4):pcm;// 查找量化级别while((mask&pcm)==0&&eee>0){mask>>=1;eee--;}// 提取abcd位abcd=(pcm>>(eee?(eee+3):4))&0x0f;alaw=(uint8_t)(sign|eee<<4|abcd);alaw^=0xd5;*out++=alaw;}}/** * @brief finds the value x such that (a * x) % m = 1 * @param a number we are finding the inverse for * @param m the modulus the inversion is based on * @returns the modular multiplicative inverse of `a` mod `m` */intmodular_multiplicative_inverse(unsignedinta,unsignedintm){intx[2]={1,0};div_tdiv_result;if(m==0){return0;}a%=m;if(a==0){return0;}div_result.rem=a;while(div_result.rem>0){div_result=div(m,a);m=a;a=div_result.rem;// 计算当前迭代的x值intnext=x[1]-(x[0]*div_result.quot);x[1]=x[0];x[0]=next;}returnx[1];}/** * @brief Encrypts character string `s` with key * @param s string to be encrypted * @param key affine key used for encryption * @returns void */voidaffine_encrypt(char*s,affine_key_tkey){for(inti=0;s[i]!='\0';i++){intc=(int)s[i]-Z95_CONVERSION_CONSTANT;c*=key.a;c+=key.b;c%=ALPHABET_SIZE;s[i]=(char)(c+Z95_CONVERSION_CONSTANT);}}/** * @brief Insertion procedure, which inserts the input key in a new node in the tree * @param root pointer to parent node * @param data value to store in the new node * @returns pointer to parent node */node*insert(node*root,intdata){// 如果子树根节点为空,在此处插入键值if(root==NULL){root=newNode(data);}elseif(data>root->data){// 如果不为空且输入键值大于根键值,插入右叶子root->right=insert(root->right,data);}elseif(data<root->data){// 如果不为空且输入键值小于根键值,插入左叶子root->left=insert(root->left,data);}// 返回修改后的树returnroot;}/** * Node, the basic data structure in the tree */typedefstructnode{structnode*left;// 左子节点structnode*right;// 右子节点intdata;// 节点数据}node;/** * The node constructor * @param data data to store in a new node * @returns new node with the provided data */node*newNode(intdata){node*tmp=(node*)malloc(sizeof(node));tmp->data=data;tmp->left=NULL;tmp->right=NULL;returntmp;}/** * @brief Vector structure definition */typedefstruct{intlen;// 向量长度intcurrent;// 当前项索引int*contents;// 内部数组指针}Vector;/** * @brief Initialize vector with size 1 * @param vec pointer to Vector struct * @param val initial value */voidinit(Vector*vec,intval){vec->contents=(int*)malloc(sizeof(int));vec->contents[0]=val;vec->current=0;vec->len=1;}/** * @brief Push value to end of vector * @param vec pointer to Vector struct * @param val value to be pushed */voidpush(Vector*vec,intval){vec->contents=realloc(vec->contents,(sizeof(int)*(vec->len+1)));vec->contents[vec->len]=val;vec->len++;}/** * @brief Get item at specified index * @param vec pointer to Vector struct * @param index index to get value from * @returns value at index or -1 if out of bounds */intget(Vector*vec,intindex){if(index<vec->len){returnvec->contents[index];}return-1;}/** * @brief The main function that finds the shortest path from given source * to all other vertices using Dijkstra's Algorithm. */voidDijkstra(structGraph*graph,intsrc){intV=graph->vertexNum;intmdist[V];// 存储到顶点的更新距离intvset[V];// vset[i]为true表示顶点i包含在最短路径树中// 初始化mdist和vset,设置源点距离为0for(inti=0;i<V;i++){mdist[i]=INT_MAX;vset[i]=0;}mdist[src]=0;// 迭代查找最短路径for(intcount=0;count<V-1;count++){intu=minDistance(mdist,vset,V);vset[u]=1;for(intv=0;v<V;v++){if(!vset[v]&&graph->edges[u][v]!=INT_MAX&&mdist[u]+graph->edges[u][v]<mdist[v])mdist[v]=mdist[u]+graph->edges[u][v];}}print(mdist,V);}这些核心代码展示了项目中算法实现的质量和风格,每个函数都有详细的注释说明其功能、参数和返回值,便于理解和学习。FINISHED
0UokHtaIOxPRhj1lPtp9Tg==
更多精彩内容 请关注我的个人公众号 公众号(办公AI智能小助手)
对网络安全、黑客技术感兴趣的朋友可以关注我的安全公众号(网络安全技术点滴分享)