export function findPivot(nums: number[]): number {
  console.log(nums)
  for (let i = 0; nums.length > i; i++) {
    const left = [...nums.slice(0, i), ...nums.slice(i + 1)]
    const right = left.splice(i, nums.length)
    const leftSum = left.reduce((a, b) => a + b, 0)
    const rightSum = right.reduce((a, b) => a + b, 0)
    if (leftSum == rightSum) return i
  }
  return -1;
}