A programming challenge

new-year-chaos.js

///https://www.hackerrank.com/challenges/new-year-chaos/problem?h_l=interview&playlist_slugs%5B%5D=interview-preparation-kit&playlist_slugs%5B%5D=arrays
const assert = require('assert');

const throwErr = num => {
  throw new Error(num);
};
const minBribes = arr =>
  arr.reduce(
    (bribes, num, index) => {
      if (index + 1 < num - 2) {
        throwErr(num);
      }
      console.log(bribes, num, index);

      return bribes + (num - (index + 1));
    },
    // index + 1 < num - 2
    //   ? throwErr(num)
    //   : bribes + (num - (index + 1)),
    0
  );

// assert.equal(minBribes([2, 1]), 1);
assert.equal(minBribes([3, 2, 1]), 2);
// assert.equal(minBribes([2, 1, 5, 3, 4]), 3);
// assert.equal(minBribes([]), 0);
// assert.equal(minBribes([1, 2, 3]), 0);
// assert.equal(minBribes([2, 5, 1, 3, 4]), 'Too chaotic');