You are going to be given an array of integers. Your job is to take that array and find an index N where the sum of the integers to the left of N is equal to the sum of the integers to the right of N. If there is no index that would make this happen, return -1. https://www.codewars.com/kata/5679aa472b8f57fb8c000047

Equal Sides Of An Array

function findEvenIndex(arr)
{
  let i;
  for(i = 0; i < arr.length; i++){
      let slic1 = arr.slice(0,i).reduce((num1, num2) => num1 + num2, 0);
      let slic2 = arr.slice((i + 1), arr.length).reduce((num1, num2) => num1 + num2, 0);
      if(slic1 == slic2){
        return i;
      }
  }
  return -1;
}