Check power of 2 Cutting rope Digital roots Josephus problem kth bit
Leader in array Sliding window technique Stock buy-sell Kadane's algorithm (Maximum sum of subarray) Trapping rain water Presum technique
Contains only single file Application of tree Depth first search Breadth first search Problems of DFS-BFS
##14. Binary Search Tree BST background BST Introduction Problems on BST Self balancing BST TreeSet and TreeMap in Java