solution for find count

find-count.js

var arr = [1, 2, 3, 3, 3, 4, 3, 5, 4, 6, 5];
//solution with 2 for loop
var counts = {};
for (var i = 0; i < arr.length; i++) {
    for (var j = i; j < arr.length; j++) {
        if (arr[i] === arr[j]) {
            if (counts[arr[i]]) {
                counts[arr[i]]++;
            } else {
                counts[arr[i]] = 1;
            }
            break;
        }
    }

}
console.log(counts); //Output: { '1': 1, '2': 1, '3': 4, '4': 2, '5': 2, '6': 1 }


// solution with single for loop
var listCount = {}; // initialize an empty object
for (var i = 0; i < arr.length; i++) {
    var element = arr[i];
    if (listCount[element]) { // if element already exists in occArr
        listCount[element]++; // increment its value
    } else {
        listCount[element] = 1; // add the element as a new key-value pair
    }
}

console.log(listCount);// output: { '1': 1, '2': 1, '3': 4, '4': 2, '5': 2, '6': 1 }