CodingSparkles

Repeated Item Count in the given Array

JavaScript

1 min read

October 06, 2021

In this article, i am going to share information about how to calculate the repeated word count in the given array.

Repetition count calculation method.

const getRepeatedWordDetails = (inputArray) => {
    // extract the unique items
    const uniqueItems = [...new Set(inputArray)];
    const repetationObj = {};
    // repetation item count calculation
    uniqueItems.forEach(item => {
        const filtereItem = inputArray.filter(word => word === item);
        repetationObj[item] = filtereItem.length;
    });
    return repetationObj;
}

Count from Array of Strings

const stringArray = ["react", "js", "react", "angular", "react", "js"];

getRepeatedWordDetails(stringArray);

Output

{react: 3, js: 2, angular: 1}

Count from Array of Integers

const arr2 = [10, 20, 20, 30, 10, 20, 30];

getRepeatedWordDetails(arr2);

Output

{10: 2, 20: 3, 30: 2}

That’s it for this post friends. I have tried to find the repeated word count in this way if you guys have any other idea share with me will attempt to learn together.