Minimum Operations to Make the Integer Zero

Problem Overview

• You are given an integer array; in one operation, choose a prefix and increment or decrement every element in that prefix by 1.
• Find the minimum number of operations needed to make all array elements equal to 0.
• Input: arr of n integers. Output: an integer for the minimum operations. Constraints: TO-DO.
• Array transformation domain; common coding interview interview question and practice problem.
• This problem has been asked in Unknown interviews.