JS 依照元素出現數量排序
同樣是最近遇到的狀況，需要利用陣列內元素出現的數量進行排序，以下為範例程式：
var array = ["1", "2", "4", "5", "2", "4", "2", "3"];
var str = array.toString();
var filter = [];
var result = [];
document.write("原始陣列：" + array + "<br>");
var get = function (str, tar, arr, tmp) {
if (str.indexOf(tar) >= 0) {
tmp = str.slice(str.indexOf(tar) + 1);
arr.push(tar);
get(tmp, tar, arr, tmp);
}
return arr;
}
for (i in array) {
var elm = [];
var tmp;
var fstr = filter.join();
if (fstr.indexOf(array[i]) >= 0) {
continue;
} else {
var tmp_arr = get(str, array[i], elm, tmp);
result.push(tmp_arr.length + ':' + tmp_arr[0]);
filter.push(array[i]);
}
}
result.sort();
result.reverse();
//按照出現次數排序，不刪除重複元素
var finishArray = [];
for (index in result) {
var show = result[index].split(':');
for (i = 0; i < show[0]; i++) {
finishArray.push(show[1]);
}
}
document.write("按出現次數排序，不刪除重複元素：" + finishArray + "<br>");
//按照出現次數排序，刪除重複元素
var finishArray = [];
for (index in result) {
var show = result[index].split(':');
finishArray.push(show[1]);
}
document.write("按出現次數排序，刪除重複元素：" + finishArray + "<br>");
輸出結果：
原始陣列：1,2,4,5,2,4,2,3 按出現次數排序，不刪除重複元素：2,2,2,4,4,5,3,1 按出現次數排序，刪除重複元素：2,4,5,3,1
I’m not that much of a online reader to be honest but your blogs really nice, keep it
up! I’ll go ahead and bookmark your website to come back later.
All the best
I simply could not go away your site prior to suggesting
that I extremely enjoyed the standard info a person provide on your
guests? Is going to be back regularly to check out new posts
I seriously love your website.. Excellent colors & theme.
Did you make this site yourself? Please reply back as I’m looking to create my own personal site and want
to know where you got this from or just what the theme is called.
Thank you!
Way cool! Some very valid points! I appreciate you writing this post plus the
rest of the website is really good.
Attractive section of content. I just stumbled upon your web site and in accession capital to assert that I get actually
enjoyed account your blog posts. Anyway I will be subscribing to your augment and even I achievement
you access consistently quickly.
Howdy! This is my 1st comment here so I just wanted to give a quick
shout out and tell you I genuinely enjoy reading your posts.
Can you recommend any other blogs/websites/forums that
deal with the same subjects? Thank you so much!
Thank you a bunch for sharing this with all people you really realize what you’re
talking about! Bookmarked. Kindly also seek advice from my
site =). We may have a hyperlink change contract among us
I am regular reader, how are you everybody? This post posted at
this web page is genuinely nice.
It’s really a great and useful piece of information. I’m satisfied that you simply shared this helpful information with us.
Please stay us informed like this. Thank
you for sharing.
I take pleasure in, lead to I found just what I was looking
for. You have ended my 4 day lengthy hunt! God Bless you man. Have a nice day.
Bye
Mondphase, Mondtag, günstige Tage – das alles findest
du in diesem Beitrag und in den Tabellen unten.
Einen schönen Tag noch! Der Mondkalender zeigt Ihnen, was an einem
bestimmten Tag am besten zu tun ist. Lass dir vom Mond helfen. Mondkalender haare schneiden 2022 – finden Sie
heraus, welcher Mondtag heute ist! Wie verwende
ich den Mondkalender? Was ist ein Mondkalender haare schneiden 2022?
Was ist ein Mondkalender haare schneiden 2022? Die Emotionen, die
der Mond symbolisiert, können sich an glückverheißenden und nicht
glückverheißenden Tagen gewaltig ändern. Der Mond hat wie die Sonne einen sehr starken Einfluss aufs menschliche Verhalten.
Es hängt alles von der Mondphase, dem Sternzeichen und dem Mondtag ab.
Der Mond beeinflusst auch Ebbe und Flut. Es kann voll,
abnehmend und wachsend sein. Der Mondkalender zeigt
nicht nur den heutigen Mondtag, die Mondphase, das Tierkreiszeichen, im sich der Mond befindet, sondern gibt auch
spezielle Empfehlungen zu verschiedenen Lebensthemen.
Thanks on your marvelous posting! I truly enjoyed reading it,
you’re a great author. I will ensure that I bookmark your blog and will come back later on. I want to encourage you to ultimately
continue your great writing, have a nice afternoon!
When someone writes an post he/she maintains the thought of a user in his/her mind that how a user can understand it.
So that’s why this piece of writing is outstdanding. Thanks!
It’s in fact very complicated in this full of activity life to listen news on TV, so I simply use web for that reason, and get the latest news.
You have made some decent points there. I
looked on the web to find out more about the issue and found most people will go along with
your views on this website.
My brother suggested I might like this website. He was entirely right.
This post actually made my day. You can not imagine just how much
time I had spent for this info! Thanks!
wonderful submit, very informative. I ponder why the other specialists of this sector don’t
understand this. You must continue your writing. I am confident, you have a great readers’ base already!
Hey! I know this is kind of off topic but I was wondering if you knew where I could get a captcha plugin for my comment form?
I’m using the same blog platform as yours and I’m having problems finding one?
Thanks a lot!
Hurrah! Finally I got a webpage from where I know
how to genuinely get valuable information regarding my
study and knowledge.
certainly like your web-site but you have to check
the spelling on several of your posts. A number of them are rife with spelling
issues and I to find it very troublesome to tell the reality then again I’ll definitely come back again.
Thanks for your marvelous posting! I definitely enjoyed reading it, you will be
a great author.I will always bookmark your blog and will eventually come back very soon.
I want to encourage one to continue your great job, have a nice holiday weekend!
I really love your website.. Very nice colors & theme.
Did you create this web site yourself? Please reply back as I’m attempting to create my own blog and want to find
out where you got this from or just what the theme is named.
Many thanks!
Great information. Lucky me I found your website by accident (stumbleupon).
I have book marked it for later!
Great blog! Do you have any helpful hints for aspiring
writers? I’m planning to start my own website soon but I’m
a little lost on everything. Would you recommend starting with a free
platform like WordPress or go for a paid option? There are so many choices out there that
I’m completely overwhelmed .. Any tips? Cheers!
After exploring a few of the blog posts on your
website, I truly appreciate your way of writing a blog.
I added it to my bookmark website list and will be checking back soon. Please visit my website as well and
let me know how you feel.
Hi, i feel that i noticed you visited my web site so i
got here to go back the want?.I am trying to to find issues to improve my site!I guess its adequate to use some
of your ideas!!
I needed to thank you for this very good read!!
I absolutely enjoyed every bit of it. I have you book-marked to check
out new things you post…
It’s amazing in support of me to have a web page, which
is valuable in support of my know-how. thanks admin
Hi, i believe that i saw you visited my blog thus i came to return the prefer?.I am
trying to in finding things to improve my web site!I suppose its good enough to make use of
some of your ideas!!
Hi there to all, how is everything, I think every one
is getting more from this website, and your views are nice in support of
new people.