Thursday, March 17, 2022

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.

 

Example 1:

Input: nums = [3,2,3]
Output: 3

Example 2:

Input: nums = [2,2,1,1,1,2,2]
Output: 2

 

Constraints:

  • n == nums.length
  • 1 <= n <= 5 * 104
  • -109 <= nums[i] <= 109

 

Follow-up: Could you solve the problem in linear time and in O(1) space?

Soluation:

In Javascript:

var majorityElement = function(nums) {
  let maxcount=0,  sl=0;

for(let i=0; i<nums.length; i++){
  let count = 0;
  for(let j=0; j<nums.length; j++){
    if(nums[i] == nums[j]) count++;
  }
  
  if(maxcount<count){
    maxcount = count;
    sl = nums[i];
  }
}
return sl;
};

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