How can case2 be similar to case 7

#1

How can case2 be similar to case 7

#2

Hello @ajayps001 suppose in case 2 we have written like :
a[i ]>a[j] and b[i]<b[j] and i>j then here we will take negative for all the terms assocaited with b then also the expresion evaluated caomes out to be the same only.
perform these on your register you will understand.
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#3

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