Question
Assignment Content (Python) Given an array of integers Arr, calculate the pivot index of this array. The pivot index is the index where the sum
Assignment Content (Python)
Given an array of integers Arr, calculate the pivot index of this array.
The pivot index is the index where the sum of all the numbers strictly to the left of the index is equal to the sum of all the numbers strictly to the index's right.
If the index is on the left edge of the array, then the left sum is 0 because there are no elements to the left. This also applies to the right edge of the array.
Return the leftmost pivot index. If no such index exists, return -1.
Example 1:
Input: Arr = [1,7,3,6,5,6]
Output: 3
Explanation:
The pivot index is 3.
Left sum = Arr [0] + Arr [1] + Arr[2] = 1 + 7 + 3 = 11
Right sum = Arr [4] + Arr [5] = 5 + 6 = 11
Example 2:
Input: Arr = [1,2,3]
Output: -1
Explanation:
There is no index that satisfies the conditions in the problem statement.
Step by Step Solution
There are 3 Steps involved in it
Step: 1
Get Instant Access to Expert-Tailored Solutions
See step-by-step solutions with expert insights and AI powered tools for academic success
Step: 2
Step: 3
Ace Your Homework with AI
Get the answers you need in no time with our AI-driven, step-by-step assistance
Get Started