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
Pretty! This has been an incredibly wonderful post.
Thank you for providing this info.
The 10 Most Scariest Things About Birth Injury Attorneys birth injury attorney
10 Quick Tips For Demo Slot pg slot demo (Lisa)
10 Best Mobile Apps For Cerebral Palsy Compensation Cerebral palsy lawsuits
Your mode of describing everything in this piece of writing is actually fastidious, all can easily understand it,
Thanks a lot https://shaik.ca/fr/qui-sommes-nous/
https://pureganics.org, a popular skincare brand, has been gaining attention in the beauty industry for its natural and organic products.
Drug information. Effects of Drug Abuse.
cost cheap colchicine tablets
All what you want to know about drugs. Read now.
Kudos, An abundance of postings!
kobefutsal.com
You’ll Be Unable To Guess Personal Injury Case’s Secrets personal injury
10 Things You’ll Need To Learn About Online Sites For Shopping In Uk Contemporary Style Vanity Light – Leonie –
9 Lessons Your Parents Taught You About Upvc Window Repair Near Me
Window repair near me
What’s The Job Market For Uk Online Phone Shopping Sites Professionals?
uk online phone shopping Sites
Just desire to say your article is as amazing. The clarity in your post is simply cool and i
could assume you are an expert on this subject. Well with your permission let
me to grab your RSS feed to keep updated with forthcoming post.
Thanks a million and please keep up the gratifying work.
Where Can You Find The Most Effective Shopping Online
Uk Information? Thick Bath Sheet Towel (Ingeborg)
The 10 Scariest Things About Online Shopping Stores
List online shopping stores list
The Most Worst Nightmare About Upvc Front Doors Get
Real upvc door fittings (Vince)
Guide To Double Glazing Near Me: The Intermediate Guide In Double Glazing Near Me double
glazing near me – Agueda –
Hi! This is kind of off topic but I need some guidance from an established blog.
Is it hard to set up your own blog? I’m not very techincal but I can figure things out pretty fast.
I’m thinking about creating my own but I’m not sure where to start.
Do you have any points or suggestions? Cheers
Just place an advance order for cards through your eidoo https://https://eidoo-app.com//, and it will to be automatically attached to any account.
Double Glazing Near Me Tools To Streamline Your Daily Life Double Glazing Near Me Trick Every Individual
Should Be Able To double Glazing near Me
Wonderful beat ! I would like to apprentice while you amend your website, how can i subscribe for
a blog site? The account helped me a acceptable deal.
I had been tiny bit acquainted of this your broadcast offered bright clear idea
Пожалуйста, ближе к делу.
Сняла койко – трудоустройство в квартире. Сняла помещение для отдыха в типовом договоре не прописано, https://crach.7bb.ru/ как я буду оплачивать аренду.
Cool blog! Is your theme custom made or did you download it from somewhere?
A theme like yours with a few simple adjustements would really
make my blog shine. Please let me know where you got your theme.
Appreciate it
A Look At The Ugly Truth About Best Online Shopping Sites London 1X2 Hdmi Splitter (Chet)
A Handbook For Replacement Upvc Window Handles From Start To Finish upvc window repair near me
Wow that was strange. I just wrote an incredibly long comment but after I clicked submit my comment didn’t appear.
Grrrr… well I’m not writing all that over again. Anyhow,
just wanted to say great blog!
Скачать свежие новинки песен https://muzfo.net 2024 года ежедневно. Наслаждайтесь комфортным прослушиванием, скачивайте музыку за пару кликов на сайте.
10 Life Lessons We Can Take From Mobile Car Diagnostics diagnostic Tests (mylivingplan.com)
10 Misconceptions That Your Boss May Have About Railroad Injuries Attorneys Railroad injuries lawsuits