Add solution to Recursion problems

[YABHAKRITI]

Navigate to /Recursion and Back Tracking/Level-1/ and add solutions to each Question in any of the language listed and not available.

[sbindal057]

hi, I am interested in this.Please assign me

[sriyah28]

hi I am interested in submitting solutions for Python. Please assign to me

[YABHAKRITI]

Go ahead! @sbindal057 & @sriyah28

[beertocode]

Please assign me this issue. Can code in C++.

[YABHAKRITI]

Follow the instruction and submit your PR accordingly.
All the best @beertocode