Coding challenges and technical interview preps

• Find the middle element of a linked list

• Two sum problem
  

Determine if two numbers in an array sum to a specific value

• Print all subsets (power set) of a given set
  

Printing all possible subsets of a given set

• Subset sum problem

• Determine if a tree is a subtree of a larger binary tree

• Generate all balanced bracket combinations

• Find all string combinations of only 0, 1 and ?

• Insert an interval into a list of sorted disjoint intervals

• Implement a queue using two stacks

• Counting steps using recursion

• Stock maximum profit

• Quickly calculate the cube root of a number