1 第一个PL/SQL的程序DECLAREBEGIN DBMS_OUTPUT.PUT_LINE('Hello World!');END;/--2一个简单的PL/SQL程序DECLARE v_num NUMBER;BEGIN v_num:=30; dbms_output.put_line('v_num...
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数据库 时间:
2015-01-07 20:48:03
阅读次数:
236
首先还是从很热门的实例parseInt("09")==0说起。parseInt(number,type)这个函数后面如果不跟第2个参数来表示进制的话,默认是10进制。比如说parseInt("010",10)就是10进制的结果:10,parseInt("010",2)就是2进制的结果:2,parse...
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Web程序 时间:
2015-01-07 20:43:19
阅读次数:
112
isNaN()不能判断一个变量是否为数字类型,isNaN(123)值为false,isNaN('123')值也为false。isNaN() 的实际作用跟它的名字isNaN并不一致,isNaN(NaN)值为true,isNaN(Number("xyz"))值为true,isNaN("abc")值为tr...
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编程语言 时间:
2015-01-07 18:12:00
阅读次数:
210
语法:ROW_NUMBER() OVER(PARTITION BY COLUMN ORDER BY COLUMN)简单的说row_number()从1开始,为每一条分组记录返回一个数字,这里的ROW_NUMBER() OVER (ORDER BY xlh DESC) 是先把xlh列降序,再为降序以后...
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数据库 时间:
2015-01-07 18:10:07
阅读次数:
254
Given a binary tree containing digits from 0-9 only,
each root-to-leaf path could represent a number.
An example is the root-to-leaf path 1->2->3 which
represents the number 123.
Find the total ...
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编程语言 时间:
2015-01-07 16:59:46
阅读次数:
149
原题链接: https://oj.leetcode.com/problems/palindrome-number/
非常非常简单的一道题。。。
class Solution {
public:
bool isPalindrome(int x) {
if (x < 0) return false;
int ori = x;...
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其他好文 时间:
2015-01-07 16:57:31
阅读次数:
114
Given an array of integers, find two numbers such that they add up to a specific target number.
The function twoSum should return indices of the two numbers such that they add up to the target, whe...
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其他好文 时间:
2015-01-07 16:50:55
阅读次数:
158
As you know, JavaScript is the number one programming language in the world, the language of the web, of mobile hybrid apps (likePhoneGaporAppcelerato...
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编程语言 时间:
2015-01-07 16:18:49
阅读次数:
298
The problem:Given a non-negative number represented as an array of digits, plus one to the number.The digits are stored such that the most significant...
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其他好文 时间:
2015-01-07 12:57:33
阅读次数:
124
Related to question Excel Sheet Column TitleGiven a column title as appear in an Excel sheet, return its corresponding column number.For example: A...
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其他好文 时间:
2015-01-07 12:44:41
阅读次数:
128