I cant understand this problem

#1

bhaiya told earlier that (a-b)%m=(a%m-b%m+m)%m,
but here bhaiya did (b-a)%m=0 to a%m=b%m howw??

#3

what negative numbers? cant understand ? negative number referring to a-b being negative?

#4

@Ishitagambhir,
That’s not true,

(9-6) % 4 = 3 = ((9%4)-(6%4)+4)%4 != ((9%4)-(6%4))%4

#5

@Ishitagambhir ???

#6

hi @namanmittal0007
( a – b) % c = ( ( a % c ) – ( b % c ) ) % c this is the distributive property of modulo

a%m-b%m+m here m has been added to ensure that if a%m-b%m is negative, it will become positive. So there is no need to add m if that value comes out to be positive. You can verify this by taking any example.

#7

okay another doubt in the same video 1,2,3,4,5 in this 5th element 5 itself cam be considered as a subarray ?

#8

@namanmittal0007 a subarray of size 1 is also to be considered a subarray only, so yes 5 itself can also be considered.

#9

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