Home > Developer > JavaScript

Implementation Code for repeated entries in javascript numeric Array

Source: Internet
Author: User
Developer on Alibaba Coud: Build your first app with APIs, SDKs, and tutorials on the Alibaba Cloud. Read more ＞

Test.htm
Copy codeThe Code is as follows:
<! DOCTYPE html PUBLIC "-// W3C // dtd xhtml 1.0 Transitional // EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<Html xmlns = "http://www.w3.org/1999/xhtml">
<Head>
<Meta http-equiv = "Content-Type" content = "text/html; charset = gb2312"/>
<Title> array-remove-repeate </title>
<Style>
. Tt {background-color: #006699; height: 3px; overflow: hidden ;}
</Style>

</Head>

<Body>
<Div class = "tt"> </div>
<Div class = "result" id = "result"> </div>
<Script>

If (! Console)
{
Var console = {};
Console. log = function (str) {alert (str );}
}

Array. prototype. unique1 = function (){
Var r = new Array ();
Label: for (var I = 0, n = this. length; I <n; I ++ ){
For (var x = 0, y = r. length; x <y; x ++ ){
If (r [x] = this [I]) {
Continue label;
}
}
R [r. length] = this [I];
}
Return r;
}

Array. prototype. unique2 = function (){
Return this. sort (). join (",,"). replace (/(, | ^) ([^,] +) (, \ 2) + (, | $)/g, "$1 $2 $4 "). replace (/, +/g ,","). replace (/, $ /,""). split (",");
}

Array. prototype. unique3 = function (){
Var temp = {}, len = this. length;
For (var I = 0; I <len; I ++ ){
Var tmp = this [I];
If (! Temp. hasOwnProperty (tmp )){
Temp [this [I] = "my god ";
}
}

Len = 0;
Var tempArr = [];
For (var I in temp ){
TempArr [len ++] = I;
}
Return tempArr;
}
Array. prototype. unique4 = function (){
Var temp = new Array ();
This. sort ();
For (I = 0; I <this. length; I ++ ){
If (this [I] = this [I + 1]) {
Continue;
}
Temp [temp. length] = this [I];
}
Return temp;

}


Var test = (function ()
{
Var arr2 = [];
For (var I = 0; I <2000; I ++)
{
Var t = I;
T = parseInt (Math. random () * 2000) + 1;
Arr2 [I] = (t. toString ());


}
// Arr2 = ["zhoujian", "zhou", "zhou"];
Return function (){
Return arr2;
// Return [1, 2, 3];
};


})();
Window. onload = function (){


//
Watch. start ("Cost times1 :");
Var arr = test ();
Console. log (arr. length );

Arr = arr. unique1 ();
Console. log (arr. length );

Watch. stop ();
//
Watch. start ("Cost times2 :");
Arr = test ();
Console. log (arr. length );


Arr = arr. unique2 ();

Console. log (arr. length );

Watch. stop ();
//
Watch. start ("Cost times3 :");
Arr = test ();
Console. log (arr. length );

Arr = arr. unique3 (); // the fastest speed when the array is large

Console. log (arr. length );

Watch. stop ();

//

Watch. start ("Cost times4 :");
Arr = test ();
Console. log (arr. length );
Arr = arr. unique4 ();
Console. log (arr. length );
Watch. stop ();
Watch. report ();

}
</Script>
</Body>
</Html>

Watch. js
Copy codeThe Code is as follows:
Var Watch = {
Result: [],
Guid:-1,
TotalTime: 0,
Start: function (title ){
This. result [++ this. guid] = [title | this. guid, new Date (). getTime ()];
},
Stop: function (){
Var r = this. result [this. guid];
Var t = new Date (). getTime ()-r [1];
This. totalTime + = t;
R [1] = t;
If (t & gt; = 10000 ){
Alert ("This code takes too long to run, you shoshould optimizate them .");
}
},
Report: function (parent ){
Var div = document. createElement ("div ");
Div. style. fontSize = "12px ";
Var str = [];
Str. push ("<p> <B> The total times: </B> <span style = 'color: # f00'>" + this. totalTime + "</span> ms. </p> ");
For (var I = 0, l = this. result. length; I <l; I ++ ){
If (this. result [I]. length> 1 ){
Str. push ("<p>" + "<span style = 'width: 200px; display: inline-block; background-color: # f7f7f7;-moz-border-radius: 3px; -webkit-border-radius: 3px; border-radius: 3px; '> "+" <span style = 'background-color: #0c0;-moz-border-radius: 3px;-webkit-border-radius: 3px; border-radius: 3px; width = "+ (this. totalTime = 0? This. totalTime: parseInt (200 * this. result [I] [1]/this. totalTime) + "px; display: inline-block; '>" + this. result [I] [1] + "</span>" + "</span> <span style = 'width: 150px; display: inline-block; '> "+ this. result [I] [0] + "</span>" + "</p> ");
} Else {
Str. push (this. result [I] [0]);
}
}
Div. innerHTML = str. join ("");
Parent = parent | document. body;
Parent. appendChild (div );
Div = null;

This. totalTime = 0;
This. guid =-1;
This. result = [];
},
Fns: function (){
Var a = arguments;
For (var I = 0, l = a. length; I <l; I ++ ){
This. start (a [I] [0]);
A [I] [1] ();
This. stop ();
}
},
ExecByTimes: function (fn, times, title ){
This. start (title );
While (times --){
Fn ();
}
This. stop ();
},
Print: function (str ){
This. result [++ this. guid] = [str];
}
}

This article is an English version of an article which is originally in the Chinese language on aliyun.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to info-contact@alibabacloud.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

Related Keywords:
count repeated elements in array in c numeric array in php two dimensional array in javascript example code array implementation numeric array concat in javascript array check array in javascript

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

What's Trending
Top 10 Tags
datastax versions naming convention zookeeper client class definition md5 microsoft sql server 2005 data structures exception handling error handling
Top 10 Keywords
microsoft download center down wordpress address url site address url wordpress address url windows installer 4 0 download 302 not found web address url definition site address url wordpress db2 integer mac os installation step by step pdf abbreviation for return

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

Get Started for Free

  • Sales Support

    1 on 1 presale consultation

    Chat Contact Sales

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

    Open a Ticket

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.

    Learn More