摘要： #include "stdio.h"#include "stdlib.h"typedef struct nodes{char ch;struct nodes *child[4];}node;char s1[10000];int sum;int pos;node* newnode(){node* t=(node *)malloc(sizeof(node));if(t!=NULL){t->child[0]=t->child[1]=t->child[2]=t->child[3]=NULL;}return t;}void build(no 阅读全文