array removing duplicate having key value pair in javascript

Question

I have an array having key value pair like this:

[3, "Rey"],[3,"Rhio"],[4,"Rey"],[1,"derter"];

I want to get an resulting array so that if the value is same , then key having maximum value would be taken.like below

[3,"Rhio"],[4,"Rey"],[1,"derter"];

So what have you tried yourself? Nothing? Anything?

Bojangles
– Bojangles

2012-12-27 13:06:22 +00:00
Commented Dec 27, 2012 at 13:06 — Bojangles
– Bojangles, Commented Dec 27, 2012 at 13:06
possible duplicate stackoverflow.com/questions/10301184/…

laxonline
– laxonline

2012-12-27 13:09:01 +00:00
Commented Dec 27, 2012 at 13:09 — laxonline
– laxonline, Commented Dec 27, 2012 at 13:09
@laxonline The "duplicate" is PHP, this is JavaScript.

JJJ
– JJJ

2012-12-27 13:09:42 +00:00
Commented Dec 27, 2012 at 13:09 — JJJ
– JJJ, Commented Dec 27, 2012 at 13:09
possible duplicate : stackoverflow.com/a/9191823/734181

Seb T.
– Seb T.

2012-12-27 13:11:14 +00:00
Commented Dec 27, 2012 at 13:11 — Seb T.
– Seb T., Commented Dec 27, 2012 at 13:11

LPD · Accepted Answer · 2012-12-27 13:11:23Z

1

I will tell you the approach you can take:

Start iterating the array, keep pushing each array element to a map, where first element is the key, and second is the value. Duplicates are gone as the duplicate keys are overridden conditionally.

Then form an array yourself by iterating over the map, where each array element is an array itself with kay as first element and value as second element. All the best.

answered Dec 27, 2012 at 13:11

LPD

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2 Comments

Parekh Shah Over a year ago

LPD Here i want the removal of value having lowest key number

LPD Over a year ago

@ParekhShah, Yes. I understand. Write the logic accordingly and that should do. Isn't it?

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