Validate array balanced
Last updated: September 4, 2025
Quick Overview
Given an array of integers, write a function to determine if the array is balanced, meaning that the sum of the elements on the left side is equal to the sum of the elements on the right side for any possible split of the array. The function should return a boolean value: `true` if the array is balanced and `false` otherwise.
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Given an array of integers, write a function to determine if the array is balanced, meaning that the sum of the elements on the left side is equal to the sum of the elements on the right side for any possible split of the array. The function should return a boolean value: `true` if the array is balanced and `false` otherwise.
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Key Topics to Cover
How to Approach This
- Clarify input constraints and edge cases before writing code.
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Possible Follow-up Questions
- How would you modify your solution to handle streaming input?
- Can you solve this in a single pass?
- What happens if the input contains duplicates?
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Problem Analysis
To determine if an array is balanced, we need to find out if there exists an index where the sum of the elements to the left of that index equals the sum of the elements to the right. This can be effi...
Approach
- Calculate the total sum of the array.
- Initialize a variable to keep track of the left sum, starting at 0.
- Iterate through the array, updating the left sum and calculating the right sum as the...
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