消除结果 [英] eliminate results
问题描述
您好。
我从数据库收到可变数量的结果。
在我的页面中，我可以显示最多36结果。
我想整洁地消除超出的结果。
例如：
说，我们有40个结果。
我必须消除4个结果。
- >我绝不能消除第一个和最后一个。
所以，我有：
34-4 = 30;
30/4返回7,5（舍入= 7）;
要消除的元素将是：
7,14,21,28
我必须自动执行此程序...
我尝试了以下解决方案：
//用于测试目的的硬编码结果数
totResults = 150;
//最大项目数
maxItems = 36;
//
p = totResults / maxItems;
//
temp = [];
for（i = 0; i< maxItems + 1; i ++）{
temp [Math.ceil（p * i）] = Math.ceil（p * i） ）;
}
未定义元素的创建完全适用于我的
目的，所以请不要不用担心。
T.事实上，这个algorhitm在一定数量的情况下起作用，但
有时它不会因为四舍五入问题而受到影响。
有人可以帮我吗？谢谢！
Hello.
I receive from a database a variable number of results.
In my page, I can show a maximum of 36 results.
I want to "neatly" eliminate the exceeding results.
For example:
say, we have 40 results.
I must eliminate 4 results.
-->I must never eliminate the first and the last.
So, I have:
34-4=30;
30/4 returns 7,5 (rounded = 7);
the elements to eliminate will be:
7, 14, 21, 28
I must automate this procedure...
I tried the following solution:
// hardcoded number of results for testing purposes
totResults = 150;
// maximum number of items
maxItems = 36;
//
p = totResults/maxItems;
//
temp = [];
for (i=0; i<maxItems+1; i++) {
temp[Math.ceil(p*i)] = Math.ceil(p*i);
}
The creation of undefined elements is perfectly functional to my
purposes, so please don''t worry about it.
The fact is that this algorhitm works in a certain number of cases but
sometimes it doesn''t, dued to rounding issues.
Could someone help me? Thanks!
推荐答案
写于2008年7月26日comp.lang.javascript ：
wrote on 26 jul 2008 in comp.lang.javascript:
您好。
我从数据库收到可变数量的结果。
Hello.
I receive from a database a variable number of results.
似乎是我的学校作业。
Seems school assignment to me.
在我的页面中，我可以展示一个最多36个结果。
我想整洁地消除超出的结果。
例如：
说，我们有40个结果。
我必须消除4个结果。
- >我绝不能消除第一个和最后一个。
所以，我有：
34-4 = 30;
30/4返回7,5（舍入= 7）;
要消除的元素将是：
7,14,21,28
我必须自动执行此程序...
我尝试了以下解决方案：
//用于测试目的的硬编码结果数
totResults = 150;
//最大项目数
maxItems = 36;
//
p = totResults / maxItems;
//
temp = [];
for（i = 0; i< maxItems + 1; i ++）{
temp [Math.ceil（p * i）] = Math.ceil（p * i） ）;
}
未定义元素的创建完全适用于我的
目的，所以请不要担心关于它。
事实是这个algorhitm在一定数量的情况下起作用，但
有时它不会因为四舍五入问题而受到影响。
有人可以帮我吗？谢谢！
In my page, I can show a maximum of 36 results.
I want to "neatly" eliminate the exceeding results.
For example:
say, we have 40 results.
I must eliminate 4 results.
-->I must never eliminate the first and the last.
So, I have:
34-4=30;
30/4 returns 7,5 (rounded = 7);
the elements to eliminate will be:
7, 14, 21, 28
I must automate this procedure...
I tried the following solution:
// hardcoded number of results for testing purposes
totResults = 150;
// maximum number of items
maxItems = 36;
//
p = totResults/maxItems;
//
temp = [];
for (i=0; i<maxItems+1; i++) {
temp[Math.ceil(p*i)] = Math.ceil(p*i);
}
The creation of undefined elements is perfectly functional to my
purposes, so please don''t worry about it.
The fact is that this algorhitm works in a certain number of cases but
sometimes it doesn''t, dued to rounding issues.
Could someone help me? Thanks!
-
Evertjan。
荷兰。
（请将x''es更改为我的电子邮件地址中的点数）
--
Evertjan.
The Netherlands.
(Please change the x''es to dots in my emailaddress)
ch ******** @ gmail.com 写道：
我从数据库收到可变数量的结果。
在我的页面中，我最多可以显示36个结果。
我想整洁地消除超出的结果。
[...]
我尝试了以下解决方案：
//硬编码的结果数量用于测试目的
totResults = 150;
//最大物品数
maxItems = 36;
/ /
p = totResults / maxItems;
//
temp = [];
for（i = 0 ; i< maxItems + 1; i ++）{
temp [Math.ceil（p * i）] = Math.ceil（p * i）;
}
未定义元素的创建完全适用于我的
目的，所以请不要担心。
事实上，这个algorhitm在一定数量的情况下起作用，但
有时它不会因为四舍五入问题而受到影响。
可能有人帮我？谢谢！
I receive from a database a variable number of results.
In my page, I can show a maximum of 36 results.
I want to "neatly" eliminate the exceeding results.
[...]
I tried the following solution:
// hardcoded number of results for testing purposes
totResults = 150;
// maximum number of items
maxItems = 36;
//
p = totResults/maxItems;
//
temp = [];
for (i=0; i<maxItems+1; i++) {
temp[Math.ceil(p*i)] = Math.ceil(p*i);
}
The creation of undefined elements is perfectly functional to my
purposes, so please don''t worry about it.
The fact is that this algorhitm works in a certain number of cases but
sometimes it doesn''t, dued to rounding issues.
Could someone help me? Thanks!
var trimmedResults = temp.slice（start，start + 36）;
PointedEars
- < br $>
var bugRiddenCrashPronePieceOfJunk =（
navigator.userAgent.indexOf（''MSIE 5''）！= -1
&& navigator。 userAgent.indexOf（''Mac''）！= -1
）// Plone，register_function.js：16
var trimmedResults = temp.slice(start, start + 36);
PointedEars
--
var bugRiddenCrashPronePieceOfJunk = (
navigator.userAgent.indexOf(''MSIE 5'') != -1
&& navigator.userAgent.indexOf(''Mac'') != -1
) // Plone, register_function.js:16
* var trimmedResults = temp.slice（start，start + 36）;
* var trimmedResults = temp.slice(start, start + 36);
您好，感谢您的回复。
事实上，temp将包含超过36个结果：
许多结果将是未定义的，我需要它们。
通过修剪该阵列的方式，我将无法获得预期的
无论如何，非常感谢。
Hi, and thanks for your kind reply.
The fact is that temp will contain more than 36 results:
many results will be undefined and I need them as they are.
By trimming that array the way you do I will not get the expected
result.
Anyway, thanks very much.
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