Why I am failing>

#1

I think in this problem we need to just count the num of unique characters.

I am traversing each string and take the each character and store in frequency array. Still, only 2 test cases are passed. Tell me the reason for failure.

#2

Help me, I also didnt get the why are we using recursion in solution video?

#3

@sauravgupta2800 because constraints are small we can make all the possible strings and check them
2
ab
bc
your code gives 3 but answer is two as we cant concatenate these two strings

#4

Got it, let me try with another approach.

#5

@sauravgupta2800 yeah sure

#6

Thanks for helping me out.

#7

@sauravgupta2800 np just mark it resolved