how-many-numbers-are-smaller-than-the-current-number.js

/**
 * @param {number[]} nums
 * @return {number[]}
 */
var smallerNumbersThanCurrent = function (nums) {
  const result = [];

  for (let i = 0; i < nums.length; i++) {
    let count = 0;
    for (let j = 0; j < nums.length; j++) {
      if (i != j && nums[i] > nums[j]) {
        count++;
      }
    }
    result.push(count);
  }
  return result;
};

const nums = [6, 5, 4, 8];

console.log(smallerNumbersThanCurrent(nums));