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
20 Things That Only The Most Devoted Cheapest 12kg
Washing Machine Fans Should Know Large Washing Machines 12Kg
9 Things Your Parents Teach You About Boat Accident Lawsuit boat Accident lawsuit
10 Ways To Build Your Can I Buy From A Uk Website Empire Red Kitchen Gadgets
http://indiaph24.store/# online pharmacy india
5 Ford Key Lessons From The Pros Ford Keyless Fob (https://Www.Dermandar.Com/User/Wealthdebtor2)
Whoa! This blog looks exactly like my old one! It’s on a completely different subject
but it has pretty much the same page layout and design. Outstanding choice of colors!
Ten 18 Wheeler Accident Law Firms That Really Improve Your Life 18 Wheeler Accident Law Firms
http://indiaph24.store/# Online medicine home delivery
10 Wrong Answers To Common Mesothelioma Lawyer Questions: Do You Know The Correct Answers?
asbestos Litigation
Where Will Upvc Window Repairs Be 1 Year From In The Near Future?
Upvc window repairs near me
indian pharmacy paypal indian pharmacy mail order pharmacy india
7 Small Changes You Can Make That’ll Make The Difference With Your Fold Away Treadmill affordable folding treadmill [Violette]
И поскольку в рулетке действует теория вероятностей, в этой дисциплине применим математический и статистический анализ.
15 Gifts For The Door Fitters Leeds Lover In Your Life window hinge Repairs leeds
mexican pharmaceuticals online mexico pharmacy mexican border pharmacies shipping to usa
I’m gone to say to my little brother, that he should also pay a visit this weblog on regular basis to take updated from most recent news.
What Is Mazda 2 Key Replacement And Why Is Everyone Speakin’ About It?
Replacement mazda key (http://www.annunciogratis.net)
Your Family Will Be Grateful For Having This Double Glazing Units
Near Me fitted
15 Inspiring Facts About ADHD Diagnosis UK The
Words You’ve Never Learned adult adhd diagnosis
The Most Negative Advice We’ve Ever Heard About Beko Washing Machines New (https://Bookmarkspot.Win/)
purple pharmacy mexico price list: cheapest mexico drugs – best online pharmacies in mexico
Guide To Treadmills Home: The Intermediate Guide To Treadmills Home Treadmills Home
http://indiaph24.store/# indian pharmacy paypal
It’s a shame you don’t have a donate button! I’d definitely donate to this excellent blog!
I suppose for now i’ll settle for bookmarking and adding your RSS feed to my Google account.
I look forward to fresh updates and will share this blog with my Facebook group.
Talk soon!
best online pharmacy india: indian pharmacy – best india pharmacy
I don’t even know how I ended up here, but I thought this post was great.
I do not know who you are but certainly you are going to
a famous blogger if you are not already 😉 Cheers!
Terrific article! That is the type of info that are supposed to
be shared across the net. Shame on the seek engines for now
not positioning this submit upper! Come on over and consult with my web site .
Thank you =)
The Three Greatest Moments In Foldable Electric Treadmill History folding electric treadmill – Blondell –
Hello! I’ve been reading your blog for some time now and finally
got the courage to go ahead and give you a shout out from Atascocita Texas!
Just wanted to tell you keep up the fantastic job!
It’s actually a nice and helpful piece of info. I am glad that you just shared
this useful info with us. Please stay us informed
like this. Thank you for sharing.