Hello …
I am doing this question from hackerearth…
This is my solution based on memoization approch…
https://www.hackerearth.com/submission/51251364/
Please recommend me what changes should i do … so it passes all test cases…
There is one more approach like…
Iterate from the back of the array and calculate ans…
Like this submission of one guy…
https://www.hackerearth.com/submission/51105268/
If possible please explain this…
Thanks…
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Hey @ashishnnnnn
Top down solution can’t be optimized further.
Now regarding Bottom Up approach
First read this https://www.geeksforgeeks.org/constant-time-range-add-operation-array/
Then go through the editorial code and if u don’t understand then let me know.
This code is same as that in the editorial just written in more complex manner
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