#172
Factorial Trailing Zeroes
Given an integer n, return the number of trailing zeroes in n!.
Note: Your solution should be in logarithmic time complexity.
一个很直观的想法是用递归求出n!然后/10 计算末...
分类:
其他好文 时间:
2015-06-25 17:30:33
阅读次数:
115
1. 问题描述
Notes:
The number of buildings in any input list is guaranteed to be in the range [0, 10000].
The input list is already sorted in ascending order by the left x position Li.
The output list m...
分类:
其他好文 时间:
2015-06-25 17:27:51
阅读次数:
190
Description:Count the number of prime numbers less than a non-negative number, n.计算小于n的非负整数中素数的个数。
素数又称质数,是指只能被1和它自身相除的自然数。需要注意的是1既不是素数也不是合数。2是最小的素数。使用判断一个数是否是素数的函数,那么这个函数需要进行一轮循环,在给定的小于n中又要进行一轮循环。所以时...
分类:
其他好文 时间:
2015-06-25 17:24:31
阅读次数:
77
删除重复行1 DELETE FROM ecm_member_login_session 2 WHERE (number , client_code) IN (3 SELECT number, client_code FROM mall.ecm_member_login_session...
分类:
数据库 时间:
2015-06-25 17:16:20
阅读次数:
200
Given acompletebinary tree, count the number of nodes.Definition of a complete binary tree fromWikipedia:In a complete binary tree every level, except...
分类:
其他好文 时间:
2015-06-25 13:43:02
阅读次数:
81
Given a complete binary tree, count the number of nodes.Definition of a complete binary tree from Wikipedia:In a complete binary tree every level, exc...
分类:
其他好文 时间:
2015-06-25 12:18:57
阅读次数:
115
SQL> create table cust(id number,name varchar2(10));Table createdSQL> alter table cust add constraint cust_id_pk primary key(id) deferrable initially ...
分类:
数据库 时间:
2015-06-25 12:07:01
阅读次数:
199
Description:Given a 2d grid map of'1's (land) and'0's (water), count the number of islands. An island is surrounded by water and is formed by connecti...
分类:
其他好文 时间:
2015-06-25 12:03:53
阅读次数:
104
Description:Count the number of prime numbers less than a non-negative number,n.题目大意:给一个int,返回小于它的质数的数量。解题思路:打表。public class Solution { public ...
分类:
其他好文 时间:
2015-06-25 11:55:16
阅读次数:
93
db2 connect to dbname user username using passwd db2 update db cfg using MAXAPPLS number查看最大连接数查看DB2最大连接数(v9.7) db2 get dbm cfg MAX_CONNECTIONS=AU...
分类:
数据库 时间:
2015-06-25 11:46:04
阅读次数:
574