Cut Array

Given an array containing only positive integers, return if you can pick two integers from the array which cuts the array into three pieces such that the sum of elements in all pieces is equal.


Example 1:

Input:  array = [1, 3, 4, 2, 2, 8, 1, 1, 1]

Output: true

Explanation: choosing the number 4 and 8 results in three pieces [1, 3], [2, 2] and [1, 1, 1]. Sum = 4.


Example 2:

Input:  array =[1, 1, 1, 1],

Output: false

Solve the problem:
def load_balance(arr): """ :type arr: List[int] :rtype: bool """

Get one-to-one training from Google Facebook engineers

Top-notch Professionals

Learn from Facebook and Google senior engineers interviewed 100+ candidates.
Most recent interview questions and system design topics gathered from aonecode alumnus.
One-to-one online classes. Get feedbacks from real interviewers.

Customized Private Class

Already a coding expert? - Advance straight to hard interview topics of your interest.
New to the ground? - Develop basic coding skills with your own designated mentor.
Days before interview? - Focus on most important problems in target company question bank.