Question: Implement a method that receives an array of integers and returns true if the following conditions are all satisfied: the array consists of +1 and

Implement a method that receives an array of integers and returns true if the following conditions are all satisfied: the array consists of +1 and -1 only, the sum of all array elements is 0, and the sum of elements in each prefix of the array is non-negative (a prefix of an array with n elements consists of the elements with indexes from 0 to some i < n); the method should return false otherwise.

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