笔面试合集

• https://www.nowcoder.com/discuss/353157493910085632

• https://blog.csdn.net/landishu/article/details/118308468

• https://blog.csdn.net/qq_41660086/article/details/79286791

• https://blog.csdn.net/qq_38769551/article/details/105651208

• https://blog.csdn.net/u011217649/article/details/52853059

三级指针

• char *a[] = {"BEIJING", "SHENZHEN", "SHANGHAI", "GUANGZHOU"};
  char **pa[] = {a+3, a+2, a+1, a};
  char ***ppa = pa;
  int main(void) {
  printf("%s, ", **++ppa);
  printf("%s, ", --++ppa+3);
  printf("%s, ", *ppa[-2]+3);
  printf("%s", ppa[-1][-1]+1);
  }

• 合并数组
  https://blog.csdn.net/m0_59938453/article/details/121450664

• 链表1
  链接：https://www.nowcoder.com/questionTerminal/0981cb2aa8ed451e845ced6c8cc068a6?source=relative
  来源：牛客网

在一个带头结点的单链表HL中，若要在第一个元素之前插入一个由指针p指向的结点，则执行？
p->next = HI ;p =HL ;
p->next = HL ;HL =p ;
p->next = HL ->next;HL ->next =p;
HL =p; p->next =HL ;
正确答案：C