In time stamp 4:42

#1

why are we taking an extra block in array in the starting ???

#2

hi @manthan.joshi.jiit it is done just for convinience in calculating the sum of subarray, watch the whole video you will understand

#3

did it two times…still not able to undersand the bisic concept behind it…why are we taking count of 0 as 1 in the starting only

#4

how would it affect the frequney

#5

@manthan.joshi.jiit it does not affect the logic, just for convinience purpose.

#6

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