How to get count of values with removing duplicate values in an array

Question

I have an array for example

var Fruits : ["apple","banana","apple", "orange","banana","kiwi","orange"];

Now I want to get the count with removing duplicate values in below type object array

0: fname: "apple"
    Count: 2;
1: fname: "banana"
    Count: 2;
2: fname: "orange"
    Count: 2;
3:fname: "kiwi"
    Count: 1;

Can anyone help me to get this object array

*type object array* - there's no such type. Elaborate your desired structure. Do you want an array of objects? — RomanPerekhrest, Sep 11 '17 at 10:39

score 0 · Answer 1 · answered Sep 11 '17 at 10:47

var Fruits = ["apple","banana","apple", "orange","banana","kiwi","orange"];

var uniqueArr = Fruits.filter(function(elem, index, self) {
    return index == self.indexOf(elem);
})

var resObjArr = [];

uniqueArr.forEach(function(ele){
  var count = 0;
  var resObj = {};
  Fruits.forEach(function(eleF){
    if(ele == eleF) count++;
  })
  resObj['fname'] = ele;
  resObj['Count'] = count;
  resObjArr.push(resObj);
})

console.log(resObjArr)

Remove duplicates from your array. and count distinct element in your main array how many times it present. Then push it to result object.

score 0 · Answer 2 · answered Sep 11 '17 at 10:47

0

Short Array.prototype.reduce() approach:

var fruits = ["apple","banana","apple", "orange","banana","kiwi","orange"],
    result = [];
 
fruits.reduce(function(r, i){
    (r[i])? r[i].count += 1 : result.push((r[i] = {fname: i, count: 1}));  
    return r;
}, {});
 
console.log(result);

answered Sep 11 '17 at 10:47

RomanPerekhrest

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Thanks you . It's working for me – Sai Prasad Sep 11 '17 at 15:42

score 0 · Answer 3 · answered Sep 11 '17 at 10:47

arr = []
for(var i = 0; i < Fruits.length; i++){
    if (arr.indexOf(Fruits[i]) == -1){
        arr.push(Fruits[i])    
    }
}

objects = []

for (var a = 0; a < arr.length; a++){
    var count = Fruits.filter(function(fruit) fruit == arr[a])
    objects.push({"fname": arr[a], "count": count.length})  
}

score 0 · Answer 4 · answered Sep 11 '17 at 11:47

var Fruits = ["apple","banana","apple", "orange","banana","kiwi","orange"];

var uniqueArr = new Set(Fruits);
var result = [];
uniqueArr.forEach(function(ele){
  var count = 0;
  var resObj = {};
   Fruits.forEach(function(eleF){
       if(ele == eleF)
      count++;

  })
  resObj['fname'] = ele;
  resObj['Count'] = count;
  result.push(resObj);
})

How to get count of values with removing duplicate values in an array

4 Answers4