Thins to Remember 4 - JUST POINTERS (2 POINTERS)

[SharedMocha]

//2 pointer logic is used in many places
//sometimes we have i=0;j=0
//sometimes we have i=0;j=1
//sometimes we have i=0;j=length-1
//sometimes we have i=1 ;j = length-1

//sometimes we have i=0;j=0
#69
#67
#67

//sometimes we have i=0;j=1
#68
https://www.interviewbit.com/problems/remove-duplicates-from-sorted-array/

//sometimes we have i=0;j=length-1
#75
https://www.geeksforgeeks.org/?p=484
#75

//sometimes we have i=1 ;j = length-1
#71