## Ciphers
  * [Merkle Hellman Cryptosystem](https://github.com/TheAlgorithms/Ruby/blob/master/ciphers/merkle_hellman_cryptosystem.rb)

## Data Structures
  * Arrays
    * [Get Products Of All Other Elements](https://github.com/TheAlgorithms/Ruby/blob/master/data_structures/arrays/get_products_of_all_other_elements.rb)
  * Binary Trees
    * [Inorder Traversal](https://github.com/TheAlgorithms/Ruby/blob/master/data_structures/binary_trees/inorder_traversal.rb)
    * [Invert](https://github.com/TheAlgorithms/Ruby/blob/master/data_structures/binary_trees/invert.rb)
    * [Postorder Traversal](https://github.com/TheAlgorithms/Ruby/blob/master/data_structures/binary_trees/postorder_traversal.rb)
    * [Preorder Traversal](https://github.com/TheAlgorithms/Ruby/blob/master/data_structures/binary_trees/preorder_traversal.rb)
  * Linked Lists
    * [Circular Linked List](https://github.com/TheAlgorithms/Ruby/blob/master/data_structures/linked_lists/circular_linked_list.rb)
    * [Doubly Linked List](https://github.com/TheAlgorithms/Ruby/blob/master/data_structures/linked_lists/doubly_linked_list.rb)
    * [Singly Linked List](https://github.com/TheAlgorithms/Ruby/blob/master/data_structures/linked_lists/singly_linked_list.rb)
  * Queues
    * [Queue](https://github.com/TheAlgorithms/Ruby/blob/master/data_structures/queues/queue.rb)
  * Stacks
    * [Stack](https://github.com/TheAlgorithms/Ruby/blob/master/data_structures/stacks/stack.rb)
  * Tries
    * [Trie](https://github.com/TheAlgorithms/Ruby/blob/master/data_structures/tries/trie.rb)

## Discrete Mathematics
  * [Euclidean Gcd](https://github.com/TheAlgorithms/Ruby/blob/master/discrete_mathematics/euclidean_gcd.rb)
  * [Exteded Euclidean Algorithm](https://github.com/TheAlgorithms/Ruby/blob/master/discrete_mathematics/exteded_euclidean_algorithm.rb)
  * [Lcm](https://github.com/TheAlgorithms/Ruby/blob/master/discrete_mathematics/lcm.rb)

## Dynamic Programming
  * [Coin Change](https://github.com/TheAlgorithms/Ruby/blob/master/dynamic_programming/coin_change.rb)

## Maths
  * [Abs](https://github.com/TheAlgorithms/Ruby/blob/master/maths/abs.rb)
  * [Abs Test](https://github.com/TheAlgorithms/Ruby/blob/master/maths/abs_test.rb)
  * [Aliquot Sum](https://github.com/TheAlgorithms/Ruby/blob/master/maths/aliquot_sum.rb)
  * [Aliquot Sum Test](https://github.com/TheAlgorithms/Ruby/blob/master/maths/aliquot_sum_test.rb)
  * [Binary To Decimal](https://github.com/TheAlgorithms/Ruby/blob/master/maths/binary_to_decimal.rb)
  * [Ceil](https://github.com/TheAlgorithms/Ruby/blob/master/maths/ceil.rb)
  * [Ceil Test](https://github.com/TheAlgorithms/Ruby/blob/master/maths/ceil_test.rb)
  * [Iterative Decimal To Binary](https://github.com/TheAlgorithms/Ruby/blob/master/maths/iterative_decimal_to_binary.rb)
  * [Number Of Digits](https://github.com/TheAlgorithms/Ruby/blob/master/maths/number_of_digits.rb)
  * [Square Root](https://github.com/TheAlgorithms/Ruby/blob/master/maths/square_root.rb)
  * [Square Root Test](https://github.com/TheAlgorithms/Ruby/blob/master/maths/square_root_test.rb)
  * [Sum Of Digits](https://github.com/TheAlgorithms/Ruby/blob/master/maths/sum_of_digits.rb)

## Other
  * [Fisher Yates](https://github.com/TheAlgorithms/Ruby/blob/master/other/fisher_yates.rb)

## Project Euler
  * Problem 1
    * [Sol1](https://github.com/TheAlgorithms/Ruby/blob/master/project_euler/problem_1/sol1.rb)
  * Problem 2
    * [Sol1](https://github.com/TheAlgorithms/Ruby/blob/master/project_euler/problem_2/sol1.rb)
  * Problem 20
    * [Sol1](https://github.com/TheAlgorithms/Ruby/blob/master/project_euler/problem_20/sol1.rb)
  * Problem 21
    * [Sol1](https://github.com/TheAlgorithms/Ruby/blob/master/project_euler/problem_21/sol1.rb)
  * Problem 22
    * [Sol1](https://github.com/TheAlgorithms/Ruby/blob/master/project_euler/problem_22/sol1.rb)
  * Problem 3
    * [Sol1](https://github.com/TheAlgorithms/Ruby/blob/master/project_euler/problem_3/sol1.rb)
    * [Sol2](https://github.com/TheAlgorithms/Ruby/blob/master/project_euler/problem_3/sol2.rb)
  * Problem 4
    * [Sol1](https://github.com/TheAlgorithms/Ruby/blob/master/project_euler/problem_4/sol1.rb)
    * [Sol2](https://github.com/TheAlgorithms/Ruby/blob/master/project_euler/problem_4/sol2.rb)
  * Problem 5
    * [Sol1](https://github.com/TheAlgorithms/Ruby/blob/master/project_euler/problem_5/sol1.rb)

## Searches
  * [Binary Search](https://github.com/TheAlgorithms/Ruby/blob/master/searches/binary_search.rb)
  * [Depth First Search](https://github.com/TheAlgorithms/Ruby/blob/master/searches/depth_first_search.rb)
  * [Double Linear Search](https://github.com/TheAlgorithms/Ruby/blob/master/searches/double_linear_search.rb)

## Searches
  * [Jump Search](https://github.com/TheAlgorithms/Ruby/blob/master/Searches/jump_search.rb)

## Searches
  * [Linear Search](https://github.com/TheAlgorithms/Ruby/blob/master/searches/linear_search.rb)
  * [Recursive Double Linear Search](https://github.com/TheAlgorithms/Ruby/blob/master/searches/recursive_double_linear_search.rb)
  * [Recursive Linear Search](https://github.com/TheAlgorithms/Ruby/blob/master/searches/recursive_linear_search.rb)
  * [Ternary Search](https://github.com/TheAlgorithms/Ruby/blob/master/searches/ternary_search.rb)

## Sorting
  * [Bogo Sort](https://github.com/TheAlgorithms/Ruby/blob/master/sorting/bogo_sort.rb)
  * [Bogo Sort Test](https://github.com/TheAlgorithms/Ruby/blob/master/sorting/bogo_sort_test.rb)
  * [Bubble Sort](https://github.com/TheAlgorithms/Ruby/blob/master/sorting/bubble_sort.rb)
  * [Bubble Sort Test](https://github.com/TheAlgorithms/Ruby/blob/master/sorting/bubble_sort_test.rb)
  * [Bucket Sort](https://github.com/TheAlgorithms/Ruby/blob/master/sorting/bucket_sort.rb)
  * [Bucket Sort Test](https://github.com/TheAlgorithms/Ruby/blob/master/sorting/bucket_sort_test.rb)
  * [Heap Sort](https://github.com/TheAlgorithms/Ruby/blob/master/sorting/heap_sort.rb)
  * [Heap Sort Test](https://github.com/TheAlgorithms/Ruby/blob/master/sorting/heap_sort_test.rb)
  * [Insertion Sort](https://github.com/TheAlgorithms/Ruby/blob/master/sorting/insertion_sort.rb)
  * [Insertion Sort Test](https://github.com/TheAlgorithms/Ruby/blob/master/sorting/insertion_sort_test.rb)
  * [Merge Sort](https://github.com/TheAlgorithms/Ruby/blob/master/sorting/merge_sort.rb)
  * [Merge Sort Test](https://github.com/TheAlgorithms/Ruby/blob/master/sorting/merge_sort_test.rb)
  * [Quicksort](https://github.com/TheAlgorithms/Ruby/blob/master/sorting/quicksort.rb)
  * [Quicksort Test](https://github.com/TheAlgorithms/Ruby/blob/master/sorting/quicksort_test.rb)
  * [Radix Sort](https://github.com/TheAlgorithms/Ruby/blob/master/sorting/radix_sort.rb)
  * [Radix Sort Test](https://github.com/TheAlgorithms/Ruby/blob/master/sorting/radix_sort_test.rb)
  * [Selection Sort](https://github.com/TheAlgorithms/Ruby/blob/master/sorting/selection_sort.rb)
  * [Selection Sort Test](https://github.com/TheAlgorithms/Ruby/blob/master/sorting/selection_sort_test.rb)
  * [Shell Sort](https://github.com/TheAlgorithms/Ruby/blob/master/sorting/shell_sort.rb)
  * [Shell Sort Test](https://github.com/TheAlgorithms/Ruby/blob/master/sorting/shell_sort_test.rb)
  * [Sort Tests](https://github.com/TheAlgorithms/Ruby/blob/master/sorting/sort_tests.rb)