diff --git a/DIRECTORY.md b/DIRECTORY.md
index ce0e7c51..3237c4e5 100644
--- a/DIRECTORY.md
+++ b/DIRECTORY.md
@@ -1,4 +1,18 @@
 
+## Backtracking
+  * [All Combinations Of Size K](https://github.com/TheAlgorithms/TypeScript/blob/HEAD/backtracking/all_combinations_of_size_k.ts)
+  * [Generateparentheses](https://github.com/TheAlgorithms/TypeScript/blob/HEAD/backtracking/generateparentheses.ts)
+  * Test
+    * [All Combinations Of Size K.Test](https://github.com/TheAlgorithms/TypeScript/blob/HEAD/backtracking/test/all_combinations_of_size_k.test.ts)
+    * [Generateparentheses.Test](https://github.com/TheAlgorithms/TypeScript/blob/HEAD/backtracking/test/generateparentheses.test.ts)
+
+## Bit Manipulation
+  * [Is Power Of 2](https://github.com/TheAlgorithms/TypeScript/blob/HEAD/bit_manipulation/is_power_of_2.ts)
+  * [Is Power Of 4](https://github.com/TheAlgorithms/TypeScript/blob/HEAD/bit_manipulation/is_power_of_4.ts)
+  * Test
+    * [Is Power Of 2.Test](https://github.com/TheAlgorithms/TypeScript/blob/HEAD/bit_manipulation/test/is_power_of_2.test.ts)
+    * [Is Power Of 4.Test](https://github.com/TheAlgorithms/TypeScript/blob/HEAD/bit_manipulation/test/is_power_of_4.test.ts)
+
 ## Ciphers
   * [Xor Cipher](https://github.com/TheAlgorithms/TypeScript/blob/HEAD/ciphers/xor_cipher.ts)
 
@@ -51,6 +65,9 @@
     * [Binary Search Tree](https://github.com/TheAlgorithms/TypeScript/blob/HEAD/data_structures/tree/binary_search_tree.ts)
     * Test
       * [Binary Search Tree.Test](https://github.com/TheAlgorithms/TypeScript/blob/HEAD/data_structures/tree/test/binary_search_tree.test.ts)
+  * Tries
+      * [Tries.Test](https://github.com/TheAlgorithms/TypeScript/blob/HEAD/data_structures/tries/test/tries.test.ts)
+    * [Tries](https://github.com/TheAlgorithms/TypeScript/blob/HEAD/data_structures/tries/tries.ts)
 
 ## Dynamic Programming
   * [Knapsack](https://github.com/TheAlgorithms/TypeScript/blob/HEAD/dynamic_programming/knapsack.ts)
@@ -58,11 +75,17 @@
 ## Graph
   * [Bellman Ford](https://github.com/TheAlgorithms/TypeScript/blob/HEAD/graph/bellman_ford.ts)
   * [Dijkstra](https://github.com/TheAlgorithms/TypeScript/blob/HEAD/graph/dijkstra.ts)
+  * [Floyd Warshall](https://github.com/TheAlgorithms/TypeScript/blob/HEAD/graph/floyd_warshall.ts)
+  * [Johnson](https://github.com/TheAlgorithms/TypeScript/blob/HEAD/graph/johnson.ts)
   * [Kruskal](https://github.com/TheAlgorithms/TypeScript/blob/HEAD/graph/kruskal.ts)
+  * [Prim](https://github.com/TheAlgorithms/TypeScript/blob/HEAD/graph/prim.ts)
   * Test
     * [Bellman Ford.Test](https://github.com/TheAlgorithms/TypeScript/blob/HEAD/graph/test/bellman_ford.test.ts)
     * [Dijkstra.Test](https://github.com/TheAlgorithms/TypeScript/blob/HEAD/graph/test/dijkstra.test.ts)
+    * [Floyd Warshall.Test](https://github.com/TheAlgorithms/TypeScript/blob/HEAD/graph/test/floyd_warshall.test.ts)
+    * [Johnson.Test](https://github.com/TheAlgorithms/TypeScript/blob/HEAD/graph/test/johnson.test.ts)
     * [Kruskal.Test](https://github.com/TheAlgorithms/TypeScript/blob/HEAD/graph/test/kruskal.test.ts)
+    * [Prim.Test](https://github.com/TheAlgorithms/TypeScript/blob/HEAD/graph/test/prim.test.ts)
 
 ## Maths
   * [Absolute Value](https://github.com/TheAlgorithms/TypeScript/blob/HEAD/maths/absolute_value.ts)
@@ -101,20 +124,28 @@
       * [Hexagonal Numbers.Test](https://github.com/TheAlgorithms/TypeScript/blob/HEAD/maths/series/test/hexagonal_numbers.test.ts)
   * [Sieve Of Eratosthenes](https://github.com/TheAlgorithms/TypeScript/blob/HEAD/maths/sieve_of_eratosthenes.ts)
   * [Signum](https://github.com/TheAlgorithms/TypeScript/blob/HEAD/maths/signum.ts)
+  * [Ugly Numbers](https://github.com/TheAlgorithms/TypeScript/blob/HEAD/maths/ugly_numbers.ts)
   * [Zellers Congruence](https://github.com/TheAlgorithms/TypeScript/blob/HEAD/maths/zellers_congruence.ts)
 
 ## Other
+  * [Is Sorted Array](https://github.com/TheAlgorithms/TypeScript/blob/HEAD/other/is_sorted_array.ts)
   * [Parse Nested Brackets](https://github.com/TheAlgorithms/TypeScript/blob/HEAD/other/parse_nested_brackets.ts)
+  * [Shuffle Array](https://github.com/TheAlgorithms/TypeScript/blob/HEAD/other/shuffle_array.ts)
   * Test
+    * [Is Sorted Array.Test](https://github.com/TheAlgorithms/TypeScript/blob/HEAD/other/test/is_sorted_array.test.ts)
     * [Parse Nested Brackets.Test](https://github.com/TheAlgorithms/TypeScript/blob/HEAD/other/test/parse_nested_brackets.test.ts)
+    * [Shuffle Array.Test](https://github.com/TheAlgorithms/TypeScript/blob/HEAD/other/test/shuffle_array.test.ts)
 
 ## Search
   * [Binary Search](https://github.com/TheAlgorithms/TypeScript/blob/HEAD/search/binary_search.ts)
   * [Jump Search](https://github.com/TheAlgorithms/TypeScript/blob/HEAD/search/jump_search.ts)
   * [Linear Search](https://github.com/TheAlgorithms/TypeScript/blob/HEAD/search/linear_search.ts)
+  * [Sentinel Search](https://github.com/TheAlgorithms/TypeScript/blob/HEAD/search/sentinel_search.ts)
 
 ## Sorts
+  * [Bogo Sort](https://github.com/TheAlgorithms/TypeScript/blob/HEAD/sorts/bogo_sort.ts)
   * [Bubble Sort](https://github.com/TheAlgorithms/TypeScript/blob/HEAD/sorts/bubble_sort.ts)
+  * [Counting Sort](https://github.com/TheAlgorithms/TypeScript/blob/HEAD/sorts/counting_sort.ts)
   * [Cycle Sort](https://github.com/TheAlgorithms/TypeScript/blob/HEAD/sorts/cycle_sort.ts)
   * [Gnome Sort](https://github.com/TheAlgorithms/TypeScript/blob/HEAD/sorts/gnome_sort.ts)
   * [Insertion Sort](https://github.com/TheAlgorithms/TypeScript/blob/HEAD/sorts/insertion_sort.ts)
diff --git a/backtracking/all-combinations-of-size-k.ts b/backtracking/all_combinations_of_size_k.ts
similarity index 100%
rename from backtracking/all-combinations-of-size-k.ts
rename to backtracking/all_combinations_of_size_k.ts
diff --git a/backtracking/generateParentheses.ts b/backtracking/generateparentheses.ts
similarity index 100%
rename from backtracking/generateParentheses.ts
rename to backtracking/generateparentheses.ts
diff --git a/backtracking/test/all-combinations-of-size-k.test.ts b/backtracking/test/all_combinations_of_size_k.test.ts
similarity index 100%
rename from backtracking/test/all-combinations-of-size-k.test.ts
rename to backtracking/test/all_combinations_of_size_k.test.ts
diff --git a/backtracking/test/generateParentheses.test.ts b/backtracking/test/generateparentheses.test.ts
similarity index 100%
rename from backtracking/test/generateParentheses.test.ts
rename to backtracking/test/generateparentheses.test.ts
diff --git a/maths/test/ugly_numbers.test.ts b/maths/test/ugly_numbers.test.ts
new file mode 100644
index 00000000..d25633dc
--- /dev/null
+++ b/maths/test/ugly_numbers.test.ts
@@ -0,0 +1,6 @@
+import { UglyNumbers } from '../ugly_numbers';
+
+test('Ugly Numbers', () => {
+  const uglyNumbers = UglyNumbers();
+  expect(Array(11).fill(undefined).map(() => uglyNumbers.next())).toEqual([1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15]);
+})
diff --git a/maths/ugly_numbers.ts b/maths/ugly_numbers.ts
new file mode 100644
index 00000000..5b7f60af
--- /dev/null
+++ b/maths/ugly_numbers.ts
@@ -0,0 +1,36 @@
+/**
+ * @generator
+ * @description Generates ugly numbers
+ * @summary Ugly numbers are natural numbers whose only prime factors are 2, 3 and 5.
+ * They can be represented in the form 2^a * 3^b * 5*c. By convention, 1 is also considered to be
+ * an ugly number.
+ * The first few terms of the sequence are: 1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20...
+ * 
+ * For the provided n, the nth ugly number shall be computed.
+ * @see [GeeksForGeeks](https://www.geeksforgeeks.org/ugly-numbers/)
+ */
+function* UglyNumbers() {
+  yield 1
+
+  let idx2 = 0, idx3 = 0, idx5 = 0
+  const uglyNumbers = [1]
+
+  let nextx2: number, nextx3: number, nextx5: number, nextUglyNum: number
+
+  while(true) {
+    nextx2 = uglyNumbers[idx2] * 2
+    nextx3 = uglyNumbers[idx3] * 3
+    nextx5 = uglyNumbers[idx5] * 5
+
+    nextUglyNum = Math.min(nextx2, nextx3, nextx5)
+    yield nextUglyNum
+
+    if(nextx2 === nextUglyNum) idx2++
+    if(nextx3 === nextUglyNum) idx3++
+    if(nextx5 === nextUglyNum) idx5++
+    
+    uglyNumbers.push(nextUglyNum)
+  }
+}
+
+export { UglyNumbers }