Solution: Find Pivot Index
Explore how to identify the pivot index in an integer array by balancing the sum of elements to the left and right of each index. Understand the approach of using a running left sum and total sum to achieve an O(n) time complexity solution. This lesson helps you implement an efficient method to find the earliest pivot index or determine when none exists.
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Statement
Given an integer array nums, find the pivot index of the array.
The pivot index is defined as the index where the sum of all elements strictly to its left equals the sum of all elements strictly to its right. If the index lies on the left edge of the array, the left sum is considered
Return the leftmost pivot index. If no such index exists, return
Constraints:
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