用C语言实现数据结构中二叉树的前序中序后序遍历 int main()//主函数部分 { BiTree T=NULL; int Layer=0; int LayerT=0; printf("请输入二叉树:\n"); CreatBiTree(&T);printf("你输入的二叉树为:(竖型树状表示)\n"); PrintBinary(T,Layer); printf("\n"); printf("先序遍历二叉树为:\n"); PreOrderTraverse(T); printf("\n"); p
oracl 和db2 常用语法比较: 1、取前N条记录 Oracle:Select * from TableName where rownum <= N; DB2:Select * from TableName fetch first N rows only; 2、取得系统日期 Oracle:Select sysdate from dual; DB2:Select current timestamp from sysibm.sysdummy1; 3、空值转换 Oracle:Select