Codility - MaxCounters (JavaScript) Part 1/2

Lesson 4 -Counting Elements. Part 1 of 2. Part 2 link: https://youtu.be/J8omQ3vHaIQ Task Description: You are given N counters, initially set to 0, and you have two possible operations on them: increase(X) − counter X is increased by 1, max counter − all counters are set to the maximum value of any counter. A non-empty array A of M integers is given. This array represents consecutive operations: if A[K] = X, such that 1 ≤ X ≤ N, then operation K is increase(X), if A[K] = N + 1 then operation K is max counter. For example, given integer N = 5 and array A such that: A[0] = 3 A[1] = 4 A[2] = 4 A[3] = 6 A[4] = 1 A[5] = 4 A[6] = 4 the values of the counters after each consecutive operation will be: (0, 0, 1, 0, 0) (0, 0, 1, 1, 0) (0, 0, 1, 2, 0) (2, 2, 2, 2, 2) (3, 2, 2, 2, 2) (3, 2, 2, 3, 2) (3, 2, 2, 4, 2) The goal is to calculate the value of every counter after all operations. Write a function: function solution(N, A); that, given an integer N and a non-empty array A consisting of M integers, returns a sequence of integers representing the values of the counters. Result array should be returned as an array of integers. For example, given: A[0] = 3 A[1] = 4 A[2] = 4 A[3] = 6 A[4] = 1 A[5] = 4 A[6] = 4 the function should return [3, 2, 2, 4, 2], as explained above. Write an efficient algorithm for the following assumptions: N and M are integers within the range [1..100,000]; each element of array A is an integer within the range [1..N + 1].