Share and Learn To Write Code!

Here we have one example find the frequency of the similar numbers that occur in the array list.

const example = [1, 4, 5, 3, 3, 2, 4, 5, 5, 8, 10];

const obj = {};

for (let index = 0; index < example.length; index++) {
    const element = example[index];
    obj[element] = (obj[element] || 0) + 1;
}

console.log("The Frequency of the numbers in array is: \n");

console.log(obj);

Output of the program is :

The Frequency of the numbers in array is:

{ '1': 1, '2': 1, '3': 2, '4': 2, '5': 3, '8': 1, '10': 1 }