169. Majority Element

Given an array nums of size n, return the majority element.
The majority element is the element that appears more than ⌊n / 2⌋ times. You may assume that the majority element always exists in the array.

Hashmap

var majorityElement = function(nums) {
    let map={};
    let maxChar=nums[0];
    for(let i=0;i<nums.length;++i){
        const char=nums[i];
        if(!map[char] || map[char]===0){
            map[char]=1;
        }else{
            map[char]++;
        }
        if(map[char]>map[maxChar]){
            maxChar=char;
        }
    }
    return maxChar;
};