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Leetcode Problem 2789. Largest Element in an Array after Merge Operations
2789. Largest Element in an Array after Merge Operations
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Leetcode Solutions
Greedy Approach with Reverse Traversal
Solution Idea
Algorithm Steps
Code Implementation
Complexity Analysis
Initialize a variable
max_sum
to 0, which will store the maximum sum encountered.
Start from the second last element of the array and move towards the first element.
For each element, check if it is less than or equal to the sum of elements to its right.
If it is, add the current element to the sum of elements to its right.
Update
max_sum
with the larger of
max_sum
and the new sum.
Continue this process until the first element of the array is reached.
Return
max_sum
as the result.
Prefix and Suffix Sum Approach
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