Find Mode of an Array using JavaScript

function findModes(arr) {

    // Create a frequency map
    const frequencyMap = {};

    arr.forEach(number => {
        frequencyMap[number] =
            (frequencyMap[number] || 0) + 1;
    });

    let modes = [];
    let maxFrequency = 0;


    for (const number in frequencyMap) {
        const frequency = frequencyMap[number];
        if (frequency > maxFrequency) {
            maxFrequency = frequency;
            modes = [parseInt(number)];
        } else if (frequency === maxFrequency) {
            modes.push(parseInt(number));
        }
    }

    return modes;
}

const input = [5, 4, 5, 6, 6, 6, 7, 5];
const result = findModes(input);
console.log(result);

function mode(input) {

    // Object to store the frequency of each element
    let mode = {};

    // Variable to store the frequency of the current mode
    let maxCount = 0;

    // Array to store the modes
    let modes = [];

    // Iterate through each element of the input array
    input.forEach(function (e) {
        if (mode[e] == null) {
            mode[e] = 1;
        } else {
            mode[e]++;
        }
        if (mode[e] > maxCount) {

            // Update the current mode and its frequency
            modes = [e];
            maxCount = mode[e];
        } else if (mode[e] === maxCount) {
            modes.push(e);
        }
    });
    return modes;
}
let input = [1, 2, 3, 3, 3, 2, 2];
console.log(mode(input));

function Mode(arr) {

    // Sort the array in ascending order
    arr.sort((a, b) => a - b);

    let modes = [];
    let maxCount = 0;
    let currentCount = 1;

    let i = 0;
    while (i < arr.length) {

        // Count the occurrences of the current element
        while (i < arr.length - 1 &&
            arr[i] === arr[i + 1]) {
            currentCount++;
            i++;
        }

        // Update the modes array if needed
        if (currentCount === maxCount) {
            modes.push(arr[i]);
        } else if (currentCount > maxCount) {
            maxCount = currentCount;
            modes = [arr[i]];
        }

        // Reset currentCount for the next element
        currentCount = 1;
        i++;
    }

    return modes;
}

const input = [1, 2, 3, 3, 3, 2, 2];
const modes = Mode(input);
console.log(modes);