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Algorithms | Divide and Conquer | Question 4
  • Last Updated : 07 Apr, 2013

Maximum Subarray Sum problem is to find the subarray with maximum sum. For example, given an array {12, -13, -5, 25, -20, 30, 10}, the maximum subarray sum is 45.

The naive solution for this problem is to calculate sum of all subarrays starting with every element and return the maximum of all. We can solve this using Divide and Conquer, what will be the worst case time complexity using Divide and Conquer.
(A) O(n)
(B) O(nLogn)
(C) O(Logn)
(D) O(n^2)


Answer: (B)

Explanation: See https://www.geeksforgeeks.org/divide-and-conquer-maximum-sum-subarray/

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