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
Wow, lovely website. Thnx …
https://iotwock.info
Unquestionably imagine that that you said. Your favorite justification appeared to be on the
web the simplest thing to take into accout of. I say to you, I definitely
get irked while people consider concerns that they plainly do not understand
about. You managed to hit the nail upon the top as neatly
as outlined out the entire thing with no need
side effect , folks can take a signal. Will likely be
again to get more. Thank you
Hello my family member! I want to say that this post is amazing,
nice written and come with approximately all vital infos.
I would like to peer more posts like this .
Good day! I could have sworn I’ve been to this site before but
after browsing through some of the post I realized it’s new to me.
Anyways, I’m definitely happy I found it and I’ll be book-marking and
checking back often!
купить алкоголь на дом доставка алкоголя москва
Продвижение в google быстро
Indian Cert Pharm: indian pharmacy – Indian Cert Pharm
Best Indian pharmacy: Indian pharmacy that ships to usa – Best online Indian pharmacy
Hi! I could have sworn I’ve been to this blog before but after reading through some of the post I realized it’s new to me.
Anyways, I’m definitely glad I found it and I’ll be
bookmarking and checking back often! https://teramus.gr/index.php/services/item/20-building
Bromley Window Repair: It’s Not As Expensive As You Think Double Glazing Window Repair Bromley
This website really has all the information I needed concerning this subject and didn’t know who to ask.
Seriously lots of excellent advice!
magnificent issues altogether, you simply won a new reader.
What could you suggest about your publish that you simply
made a few days ago? Any positive?
Beneficial knowledge Appreciate it.
для вывода из запоя в стационаре https://vyvod-iz-zapoya-v-stacionare21.ru .
8 Tips For Boosting Your SEO Specialist London Game seo London
Astonishingly individual pleasant website. Great details available on couple of clicks on.
https://bielsko.biala.pl/
Online medicine: Best Indian pharmacy – Indian Cert Pharm
Buy Tortoise Online buy tortoise online
вывод из запоя в стационаре воронежа http://vyvod-iz-zapoya-v-stacionare-voronezh24.ru .
canadian pharmacy 24: Canadian Md Pharm – legit canadian pharmacy
Bet Zula, spor bahisleri konusunda essiz deneyimler sunar. Fenerbahce Galatasaray derbisi icin Betzula giris yaparak favori tak?mlar?n?za destek olabilirsiniz.
Betzula’n?n mobil uyumlu tasar?m?, kullan?c?lar?na her zaman kolayl?k saglar. guncel duyurular? kac?rmadan yeni kampanyalardan haberdar olabilirsiniz.
Fenerbahce ve Galatasaray gibi buyuk tak?mlar?n heyecan?n? Betzula ile yasayabilirsiniz.
Ayr?ca, bet zula giris linki, mobil cihazlar uzerinden kolay erisim sunar. Ozel olarak, https://apsistek.com/yeni-giris/ – bet zula giris, kolay ve h?zl? giris imkan?.
Betzula, mobil uyumlu ve h?zl? erisim f?rsatlar?na kadar tum kullan?c?lar?n ihtiyaclar?n? kars?lar. favori tak?m?n?z?n galibiyetini kutlamak icin hemen Betzula’ya kat?l?n!
707707+
online pharmacy canada: Canadian Md Pharm – canadian mail order pharmacy
Cocktail Lounge 잠실오피
Mexican Easy Pharm: Mexican Easy Pharm – Mexican Easy Pharm
mexico drug stores pharmacies: mexican rx online – Mexican Easy Pharm
Helpful information. Lucky me I found your site by accident, and
I am surprised why this accident didn’t happened in advance!
I bookmarked it.
Mexican Easy Pharm: mexican border pharmacies shipping to usa – pharmacies in mexico that ship to usa
pharmacy wholesalers canada: CanadianMdPharm – legitimate canadian online pharmacies
medication from mexico pharmacy: reputable mexican pharmacies online – Mexican Easy Pharm