How to find the count of duplicated array values and list it in key-value pair object.

[Fathima6]

Hi,

How to find the count of duplicated array values and list it in key-value pair object.

for example : having array of {a,b,a,c,b,a}

the result would be [{"group":"a","score":"3"},{"group":"b","score":"2"},{"group":"c","score":"1"}]

Can anyone help please?

Thanks in advance!

[Priya Shid1]

Hi Fatima ,

For this you have to iterate throw the array and  take count of each array element,

var final=[];

for(var i=0.i<array.length,i++)

{ 

var temp=array[i];

var count=0;

for(var j=i+1;j<array.length,i++)

{

if(array[i]==array[j])

count=count+1;

}

final.push({"group":"array[i]","score":"count"});

}

Please mark if that helps You in any way!!!

[Milind Gharte · Accepted solution]

Hi ,

Here is function that will count each type of duplicate element.

function count() {
array_elements = ["a", "b", "c", "d", "e", "a", "b", "c", "f", "g", "h", "h", "h", "e", "a"];

array_elements.sort();

var current = null;
var cnt = 0;
for (var i = 0; i < array_elements.length; i++) {
if (array_elements[i] != current) {
if (cnt > 0) {
document.write(current + ' comes --> ' + cnt + ' times<br>');
}
current = array_elements[i];
cnt = 1;
} else {
cnt++;
}
}
if (cnt > 0) {
document.write(current + ' comes --> ' + cnt + ' times');
}

}

Output

a comes --> 3 times
b comes --> 2 times
c comes --> 2 times
d comes --> 1 times
e comes --> 2 times
f comes --> 1 times
g comes --> 1 times
h comes --> 3 times

If it helps,Please mark ✅ Correct and 👍 Helpful.

Warm Regards,

Milind