please help me where i am doing mistake or logic is wrong.
circular_Sum in array
Hello @mohsin_khan you have to think of the circular case as well.
like:
The maximum subarray sum in circular array is maximum of following
Maximum subarray sum in non circular array
Maximum subarray sum in circular array.
Example - [1,2,5,-2,-3,5]
Steps -
Find the maximum subarray sum using Kadane Algorithm. This is maximum sum for non circular array.
1+2+5 = 8
For non circular sum,
****************8
-2-3 = -5
Step 2) Now find the total sum of array = 1 + 2 + 5 -2 - 3 + 5 = 8
Step 3) The max subarray sum for circular array = Total Sum - Minimum subarray Sum
= 8 - (-5) = 8 + 5 = 13
As illustrated above, substracting minimum subarray sum from total sum gives maximum circular subarray sum.
Answer = Max ( Non circular max sum + circular max sum ) = max(8,13) = 13
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