- Queue, Stack, Linked List, Binary Search
- Sum of a sequence of integers
- Sum of what each beggar brings home assuming regular turns: Arrays
- Get the middle character(s) of a word
- Find the count of most frequent item in an array
- Find the unique number in an array
- Sum of prime indexed elements
- Flipping every nth switch with n passes
- Convert string to title case
- Split the bill: Object/dictionary
- Sort my animals: Classes
- Sorting array based on another array
- Delete occurences of an element if it occurs more than n times
- Get sum of 6 best results: Collections
- Get the highest value of consonant in a string
- Sort and distribute server workload: Arrays