2620-counter

2620. Counter (?) (https://leetcode.com/problems/counter)

Given an integer n, return a counter function. This counter function initially returns n and then returns 1 more than the previous value every subsequent time it is called (n, n + 1, n + 2, etc).

function createCounter(n: number): () => number {
  return function () {
    return n++
  }
}

Example 1:
 
    Input:
    n = 10
    ["call","call","call"]
    Output: [10,11,12]
    Explanation:
    counter() = 10 // The first time counter() is called, it returns n.
    counter() = 11 // Returns 1 more than the previous time.
    counter() = 12 // Returns 1 more than the previous time.
 
  Example 2:
 
    Input:
    n = -2
    ["call","call","call","call","call"]
    Output: [-2,-1,0,1,2]
    Explanation: counter() initially returns -2. Then increases after each sebsequent call.