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  1. Combinations of a String
    2. Write a method that prints out all the combinations of the characters in a string.
  2. Permutations of a String
    3. Write a method that prints out all the permutations of the characters in a string.
  3. Binary Search
    4. Study of Binary Search, its algorithm and recursive/iterative implementations
  4. Recursion
    5. The concept of recursion in computer science
  5. Binary Number Representation
    6. Introduction to binary numbers and the binary system
  6. Convert an Integer to a String in Java
    7. Write a method in Java that converts an int to its String representation.
  7. Convert a String to an Integer in Java
    8. Write a method in Java that converts a String to its int representation.
  8. Reverse Word Order in a String Challenge
    9. Write an efficient function that reverses the words in a strong (common interview problem).
  9. Delete Characters from String
    10. Write a function in Java/C# that deletes specific characters from a string.
  10. First Non-Repeated Character in a String
    11. Write a function that finds the first non-repeated character in a given string