updated tree datastructure
updated tree datastructure

masharp/useful-algorithms,masharp/algorithms-n-structures,masharp/algorithm-challenges-n-stuff,masharp/useful-algorithms,masharp/algorithms-n-structures,masharp/algorithms-n-structures,masharp/algorithm-challenges-n-stuff,masharp/algorithm-challenges-n-stuff,masharp/algorithm-challenges-n-stuff,masharp/algorithms-n-structures