Want solution and explanation with comments

#1
#2

You can refer this. It is similar to the Normal BFS with some minor tweaks.

#3

I have understood nothing
make the required change only in this code


and explain that with comments

#4

I hope I’ve cleared your doubt. I ask you to please rate your experience here
Your feedback is very important. It helps us improve our platform and hence provide you
the learning experience you deserve.

On the off chance, you still have some questions or not find the answers satisfactory, you may reopen
the doubt.

#5

not cleared Pls send code with explanation for this problem

#6


Please check it.

#7

I hope I’ve cleared your doubt. I ask you to please rate your experience here
Your feedback is very important. It helps us improve our platform and hence provide you
the learning experience you deserve.

On the off chance, you still have some questions or not find the answers satisfactory, you may reopen
the doubt.