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
The 12 Best Bifold Door Repair Accounts To Follow On Twitter repairing Bifold doors
A Trip Back In Time How People Discussed Upvc Door Hinge 20 Years Ago cost Of replacing window Hinges
The No. Question That Everyone In Locksmith Cars Should Be Able Answer locksmith Car Keys (https://osman-crabtree.thoughtlanes.net)
Профессиональный сервисный центр по ремонту сотовых телефонов в Москве.
Мы предлагаем: ремонт ноутбуков в москве рядом
Наши мастера оперативно устранят неисправности вашего устройства в сервисе или с выездом на дом!
Fantastic forum posts, Thanks!
https://indianpharmdelivery.com/# best india pharmacy
best india pharmacy
20 Trailblazers Lead The Way In Togel4d Toto4D
It’s the best time to make some plans for the future and it
is time to be happy. I have read this post and
if I could I desire to suggest you some interesting things or tips.
Maybe you could write next articles referring
to this article. I want to read even more
things about it!
The 3 Greatest Moments In Metal Triple Bunk Bed History double Bed and single bunk bed
Профессиональный сервисный центр по ремонту сотовых телефонов в Москве.
Мы предлагаем: ремонт ноутбуков рядом
Наши мастера оперативно устранят неисправности вашего устройства в сервисе или с выездом на дом!
How To Get More Benefits Out Of Your Bmw Replacement Key Fob Replacement bmw key
Свежие события появляются в рекламной ленте на главной странице сайта и в приложениях.
Профессиональный сервисный центр ремонт телефонов на дому ремонт мобильных телефонов
This Is How Togel Resmi Indonesia Will Look Like In 10 Years Situs toto Togel
http://drugs24.pro/# erection pills
top 10 online pharmacy in india
You suggested this exceptionally well.
caesars casino online promo code no deposit casino bonus canada internet casino game online
Why Program Keys For Cars Is Still Relevant In 2023 Reprogramming car Key
The 10 Scariest Things About Patio Doors Repairs patio doors repair – Alonzo –
Why Is Adults Toy For Men So Popular? adult Couples toys
You’ll Never Guess This Walking Pad Under Desk’s Tricks walking pad under desk (Christin)
Greetings from Colorado! I’m bored at work so I decided to check out
your site on my iphone during lunch break. I love the information you provide here and can’t wait to take a look when I get home.
I’m surprised at how fast your blog loaded on my phone
.. I’m not even using WIFI, just 3G .. Anyways,
superb blog!
п»їlegitimate online pharmacies india india pharmacy indian pharmacy paypal
Fantastic goods from you, man. I have understand your stuff
previous to and you’re just too magnificent. I really like what
you’ve acquired here, certainly like what you’re saying and the way in which you say it.
You make it entertaining and you still take care
of to keep it sensible. I can’t wait to read far more from you.
This is actually a tremendous web site.
Hello it’s me, I am also visiting this web site on a regular
basis, this website is genuinely good and the viewers are really sharing fastidious thoughts.
Cat Flap Fitters Window cat flap
Как правильно купить диплом колледжа и пту в России, подводные камни
5gruppa365-diploms.ru
Five Case Battle Lessons From The Professionals case Battle Cs2
DANKBROS LTD – Free company information from Companies House including registered office address, filing history, accounts, annual return, officers http://jack-hughes.com/?URL=https://dankbros.net/
Five Killer Quora Answers On Electric Fire Wall Mounted electric fire wall mount
Quality articles is the secret to interest the users to visit the web site, that’s what this site is providing.