Function majorityElement

javascript/0169-majority-element.js:9–22

(nums)

 */

var majorityElement = function (nums) {
    let res = nums[0];
    let count = 1;

    for (let i = 1; i < nums.length - 1; i++) {
        if (nums[i] === res) count++;
        else if (!--count) {
            res = nums[i + 1];
            count = 0;
        }
    }

    return res;
};

/**
 * HashMap