Sum Triplet Query

#1

Sir/Maam,
Using said method in this video,
let us say we have an array
1, 2, 3, 4, 5, 6, 7, 7
here (1, 2, 7) should be the answer twice ??
if yes, so in this video at 2:00 we did l++ and r-- simultaneously .
After it reaches pointer l=2 and r=7(last 7);
we did l++ and r-- ;
so l=3 and r=7(second last 7).
So we will miss the second answer.
If you could pls specify a better way to resolve this problem.
Thank you.

#2

This qs is relating to prev video i.e., Sum Triplet Hint.

#3

yaa you are correct in two pointer approach we will not be able to generate all the ans…so you could just use a bruteforce technique(3 loops) or you could use a hashmap to optimize your logic…