fixed some spellings

Backtracking/SumOfSubset.js

@@ -4,7 +4,7 @@
  *
  *  Given an ordered set W of non-negative integers and a value K,
  *  determine all possible subsets from the given set W whose sum
- *  of its elemets equals to the given value K.
+ *  of its elements equals to the given value K.
  *
  *  More info: https://www.geeksforgeeks.org/subset-sum-backtracking-4/
  */
@@ -53,7 +53,7 @@ const sumOfSubset = (set, subset, setindex, sum, targetSum) => {
       targetSum
     )
 
-    // Concat the recursive result with current result arary
+    // Concat the recursive result with current result array
     results = [...results, ...subsetResult]
   })
 

Bit-Manipulation/BinaryCountSetBits.js

@@ -3,13 +3,13 @@
     license: GPL-3.0 or later
 
     This script will find number of 1's
-    in binary representain of given number
+    in binary representation of given number
 
 */
 
 function BinaryCountSetBits (a) {
   'use strict'
-  // convert number into binary representation and return number of set bits in binary representaion
+  // convert number into binary representation and return number of set bits in binary representation
   return a.toString(2).split('1').length - 1
 }
 

Ciphers/KeyFinder.js

@@ -48,7 +48,7 @@ function keyFinder (str) { // str is used to get the input of encrypted string
         // console.log( k + outStrElement + wordBank[i] );//debug
 
         // this part need to be optimize with the calculation of the number of occurrence of word's probabilities
-        // linked list will be used in the next stage of development to calculate the number of occurace of the key
+        // linked list will be used in the next stage of development to calculate the number of occurrence of the key
         if (wordBank[i] === outStrElement) {
           return k // return the key number if founded
         }

Conversions/DateDayDifference.js

@@ -22,9 +22,9 @@ const DateDayDifference = (date1, date2) => {
   if (typeof date1 !== 'string' && typeof date2 !== 'string') {
     return new TypeError('Argument is not a string.')
   }
-  // extarct the first date
+  // extract the first date
   const [firstDateDay, firstDateMonth, firstDateYear] = date1.split('/').map((ele) => Number(ele))
-  // extarct the second date
+  // extract the second date
   const [secondDateDay, secondDateMonth, secondDateYear] = date2.split('/').map((ele) => Number(ele))
   // check the both data are valid or not.
   if (firstDateDay < 0 || firstDateDay > 31 ||

Conversions/DateToDay.js

@@ -44,7 +44,7 @@ const DateToDay = (date) => {
   if (typeof date !== 'string') {
     return new TypeError('Argument is not a string.')
   }
-  // extarct the date
+  // extract the date
   const [day, month, year] = date.split('/').map((x) => Number(x))
   // check the data are valid or not.
   if (day < 0 || day > 31 || month > 12 || month < 0) {

Conversions/RailwayTimeConversion.js

@@ -5,7 +5,7 @@
     want some changes in hour value.
 
     Input Formate -> 07:05:45PM
-    Output Fromate -> 19:05:45
+    Output Formate -> 19:05:45
 
     Problem & Explanation Source : https://www.mathsisfun.com/time.html
 */

Conversions/TitleCaseConversion.js

@@ -8,7 +8,7 @@
  * @returns {String}
  */
 const TitleCaseConversion = (inputString) => {
-  // Extact all space seprated string.
+  // Extract all space separated string.
   const stringCollections = inputString.split(' ').map(word => {
     let firstChar = ''
     // Get a character code by the use charCodeAt method.

Data-Structures/Linked-List/CycleDetection.js

@@ -11,7 +11,7 @@ function main () {
   Note:
   * While Solving the problem in given link below, don't use main() function.
   * Just use only the code inside main() function.
-  * The purpose of using main() function here is to aviod global variables.
+  * The purpose of using main() function here is to avoid global variables.
 
   Link for the Problem: https://leetcode.com/problems/linked-list-cycle/
   */

Data-Structures/Linked-List/RotateListRight.js

@@ -10,7 +10,7 @@ function main () {
   Note:
   * While Solving the problem in given link below, don't use main() function.
   * Just use only the code inside main() function.
-  * The purpose of using main() function here is to aviod global variables.
+  * The purpose of using main() function here is to avoid global variables.
 
   Link for the Problem: https://leetcode.com/problems/rotate-list/
   */

Data-Structures/Tree/AVLTree.js

@@ -37,7 +37,7 @@ let utils;
  */
 const AVLTree = (function () {
   function _avl (comp) {
-    /** @public compartor function */
+    /** @public comparator function */
     this._comp = undefined
     if (comp !== undefined) {
       this._comp = comp
@@ -119,7 +119,7 @@ const AVLTree = (function () {
       node._right = rightRotate(node._right)
       return leftRotate(node) // Right Left
     }
-    return leftRotate(node) // Rigth Right
+    return leftRotate(node) // Right Right
   }
   // implement avl tree insertion
   const insert = function (root, val, tree) {
@@ -202,7 +202,7 @@ const AVLTree = (function () {
     return true
   }
   /**
-   * TO check is a particluar element exists or not
+   * TO check is a particular element exists or not
    * @param {any} _val
    * @returns {Boolean} exists or not
    */

Data-Structures/Tree/Trie.js

@@ -14,7 +14,7 @@ function Trie () {
   this.root = new TrieNode(null, null)
 }
 
-// Recursively finds the occurence of all words in a given node
+// Recursively finds the occurrence of all words in a given node
 Trie.findAllWords = function (root, word, output) {
   if (root === null) return
   if (root.count > 0) {
@@ -79,11 +79,11 @@ Trie.prototype.remove = function (word, count) {
     child = child.children[key]
   }
 
-  // Delete no of occurences specified
+  // Delete no of occurrences specified
   if (child.count >= count) child.count -= count
   else child.count = 0
 
-  // If some occurences are left we dont delete it or else
+  // If some occurrences are left we dont delete it or else
   // if the object forms some other objects prefix we dont delete it
   // For checking an empty object
   // https://stackoverflow.com/questions/679915/how-do-i-test-for-an-empty-javascript-object

Dynamic-Programming/KadaneAlgo.js

@@ -10,7 +10,7 @@ function KadaneAlgo (array) {
     }
   }
   return maxSum
-  // This function returns largest sum contigous sum in a array
+  // This function returns largest sum contiguous sum in a array
 }
 function main () {
   const myArray = [1, 2, 3, 4, -6]

Dynamic-Programming/SieveOfEratosthenes.js

@@ -2,7 +2,7 @@ function sieveOfEratosthenes (n) {
   /*
      * Calculates prime numbers till a number n
      * :param n: Number upto which to calculate primes
-     * :return: A boolean list contaning only primes
+     * :return: A boolean list containing only primes
      */
   const primes = new Array(n + 1)
   primes.fill(true) // set all as true initially

Dynamic-Programming/tests/LongestPalindromicSubsequence.test.js

@@ -1,19 +1,19 @@
 import { longestPalindromeSubsequence } from '../LongestPalindromicSubsequence'
 
 describe('LongestPalindromicSubsequence', () => {
-  it('expects to return 1 as longest pallindromic subsequence', () => {
+  it('expects to return 1 as longest palindromic subsequence', () => {
     expect(longestPalindromeSubsequence('abcdefgh')).toBe(1)
   })
 
-  it('expects to return 4 as longest pallindromic subsequence', () => {
+  it('expects to return 4 as longest palindromic subsequence', () => {
     expect(longestPalindromeSubsequence('bbbab')).toBe(4)
   })
 
-  it('expects to return 2 as longest pallindromic subsequence', () => {
+  it('expects to return 2 as longest palindromic subsequence', () => {
     expect(longestPalindromeSubsequence('cbbd')).toBe(2)
   })
 
-  it('expects to return 7 as longest pallindromic subsequence', () => {
+  it('expects to return 7 as longest palindromic subsequence', () => {
     expect(longestPalindromeSubsequence('racexyzcxar')).toBe(7)
   })
 })

Geometry/ConvexHullGraham.js

@@ -33,7 +33,7 @@ function convexHull (points) {
   points.sort(compare)
   const p1 = points[0]; const p2 = points[pointsLen - 1]
 
-  // Divide Hull in two halfs
+  // Divide Hull in two halves
   const upperPoints = []; const lowerPoints = []
 
   upperPoints.push(p1)

Graphs/Dijkstra.js

@@ -2,7 +2,7 @@
  * Author: Samarth Jain
  * Dijkstra's Algorithm implementation in JavaScript
  * Dijkstra's Algorithm calculates the minimum distance between two nodes.
- * It is used to find the shortes path.
+ * It is used to find the shortest path.
  * It uses graph data structure.
  */
 

Graphs/NumberOfIslands.js

@@ -2,8 +2,8 @@
 https://dev.to/rattanakchea/amazons-interview-question-count-island-21h6
 Given a 2d grid map of '1's (land) and '0's (water), count the number of islands. An island is surrounded by water and is formed by connecting adjacent lands horizontally or vertically. You may assume all four edges of the grid are all surrounded by water.
 
-two a dimensial grid map
-each element is going to represent a peice of land
+a two dimensional grid map
+each element is going to represent a piece of land
 1 is land,
 0 is water
 output a number which is the number of islands

Hashes/SHA1.js

@@ -9,11 +9,11 @@
 const CHAR_SIZE = 8
 
 /**
- * Adds padding to binary/hex string represention
+ * Adds padding to binary/hex string representation
  *
- * @param {string} str - string represention (binary/hex)
+ * @param {string} str - string representation (binary/hex)
  * @param {int} bits - total number of bits wanted
- * @return {string} - string represention padding with empty (0) bits
+ * @return {string} - string representation padding with empty (0) bits
  *
  * @example
  *      pad("10011", 8); // "00010011"

Hashes/SHA256.js

@@ -20,11 +20,11 @@ const K = [
 ]
 
 /**
- * Adds padding to binary/hex string represention
+ * Adds padding to binary/hex string representation
  *
- * @param {string} str - string represention (binary/hex)
+ * @param {string} str - string representation (binary/hex)
  * @param {int} bits - total number of bits wanted
- * @return {string} - string represention padding with empty (0) bits
+ * @return {string} - string representation padding with empty (0) bits
  *
  * @example
  *      pad("10011", 8); // "00010011"
@@ -56,7 +56,7 @@ function chunkify (str, size) {
 }
 
 /**
- * Rotates string represention of bits to th left
+ * Rotates string representation of bits to th left
  *
  * @param {string} bits - string representation of bits
  * @param {int} turns - number of rotations to make

Linear-Algebra/src/la_lib.js

@@ -26,7 +26,7 @@ let LinearAlgebra;
         if (N === comps.length) {
           this.components = comps
         } else {
-          throw new Error('Vector: invalide size!')
+          throw new Error('Vector: invalid size!')
         }
       }
     } // end of constructor

Maths/BinaryExponentiationRecursive.js

@@ -2,7 +2,7 @@
   Modified from:
     https://github.com/TheAlgorithms/Python/blob/master/maths/binary_exponentiation.py
 
-  Explaination:
+  Explanation:
     https://en.wikipedia.org/wiki/Exponentiation_by_squaring
 */
 

Maths/CheckKishnamurthyNumber.js

@@ -1,11 +1,11 @@
 /*
     Problem statement and Explanation : https://www.geeksforgeeks.org/check-if-a-number-is-a-krishnamurthy-number-or-not-2/
 
-    krishnamurthy number is a number the sum of the all fectorial of the all dights is equal to the number itself.
+    krishnamurthy number is a number the sum of the all factorial of the all dights is equal to the number itself.
     145 => 1! + 4! + 5! = 1  + 24 + 120 = 145
 */
 
-// factorail utility method.
+// factorial utility method.
 const factorial = (n) => {
   let fact = 1
   while (n !== 0) {
@@ -18,7 +18,7 @@ const factorial = (n) => {
 /**
  * krishnamurthy number is a number the sum of the factorial of the all dights is equal to the number itself.
  * @param {Number} number a number for checking is krishnamurthy number or not.
- * @returns return correspond boolean vlaue, if the number is krishnamurthy number return `true` else return `false`.
+ * @returns return correspond boolean value, if the number is krishnamurthy number return `true` else return `false`.
  * @example 145 => 1! + 4! + 5! = 1  + 24 + 120 = 145
  */
 const CheckKishnamurthyNumber = (number) => {

Maths/DigitSum.js

@@ -4,7 +4,7 @@
 const digitSum = (num) => {
   // sum will store sum of digits of a number
   let sum = 0
-  // while will run untill num become 0
+  // while will run until num become 0
   while (num) {
     sum += num % 10
     num = parseInt(num / 10)

Maths/ModularBinaryExponentiationRecursive.js

@@ -2,7 +2,7 @@
   Modified from:
     https://github.com/TheAlgorithms/Python/blob/master/maths/binary_exp_mod.py
 
-  Explaination:
+  Explanation:
     https://en.wikipedia.org/wiki/Exponentiation_by_squaring
 */
 

Maths/PiApproximationMonteCarlo.js

@@ -1,5 +1,5 @@
 // Wikipedia: https://en.wikipedia.org/wiki/Monte_Carlo_method
-// Video Explaination: https://www.youtube.com/watch?v=ELetCV_wX_c
+// Video Explanation: https://www.youtube.com/watch?v=ELetCV_wX_c
 
 const piEstimation = (iterations = 100000) => {
   let circleCounter = 0

Maths/SieveOfEratosthenes.js

@@ -2,7 +2,7 @@ const sieveOfEratosthenes = (n) => {
   /*
    * Calculates prime numbers till a number n
    * :param n: Number upto which to calculate primes
-   * :return: A boolean list contaning only primes
+   * :return: A boolean list containing only primes
    */
   const primes = new Array(n + 1)
   primes.fill(true) // set all as true initially

Maths/SumOfDigits.js

@@ -17,7 +17,7 @@ function sumOfDigitsUsingString (number) {
 }
 
 /*
-  The input is divided by 10 in each iteraction, till the input is equal to 0
+  The input is divided by 10 in each iteration, till the input is equal to 0
   The sum of all the digits is returned (The res variable acts as a collector, taking the remainders on each iteration)
 */
 function sumOfDigitsUsingLoop (number) {

Maths/test/Fibonacci.test.js

@@ -6,20 +6,20 @@ import {
   FibonacciMatrixExpo
 } from '../Fibonacci'
 
-describe('Fibonanci', () => {
-  it('should return an array of numbers for FibonnaciIterative', () => {
+describe('Fibonacci', () => {
+  it('should return an array of numbers for FibonacciIterative', () => {
     expect(FibonacciIterative(5)).toEqual(
       expect.arrayContaining([1, 1, 2, 3, 5])
     )
   })
 
-  it('should return an array of numbers for FibonnaciRecursive', () => {
+  it('should return an array of numbers for FibonacciRecursive', () => {
     expect(FibonacciRecursive(5)).toEqual(
       expect.arrayContaining([1, 1, 2, 3, 5])
     )
   })
 
-  it('should return number for FibonnaciRecursiveDP', () => {
+  it('should return number for FibonacciRecursiveDP', () => {
     expect(FibonacciRecursiveDP(5)).toBe(5)
   })
 
@@ -29,7 +29,7 @@ describe('Fibonanci', () => {
     )
   })
 
-  it('should return number for FibonnaciMatrixExpo', () => {
+  it('should return number for FibonacciMatrixExpo', () => {
     expect(FibonacciMatrixExpo(0)).toBe(0)
     expect(FibonacciMatrixExpo(1)).toBe(1)
     expect(FibonacciMatrixExpo(2)).toBe(1)

Project-Euler/Problem014.js

@@ -33,12 +33,12 @@ const getCollatzSequenceLength = (num, seqLength) => {
 
 const findLongestCollatzSequence = () => {
   let startingPointForLargestSequence = 1
-  let largestSequnceLength = 1
+  let largestSequenceLength = 1
   for (let i = 2; i < 1000000; i++) {
     const currentSequenceLength = getCollatzSequenceLength(i, 1)
-    if (currentSequenceLength > largestSequnceLength) {
+    if (currentSequenceLength > largestSequenceLength) {
       startingPointForLargestSequence = i
-      largestSequnceLength = currentSequenceLength
+      largestSequenceLength = currentSequenceLength
     }
   }
   return startingPointForLargestSequence

Search/StringSearch.js

@@ -15,7 +15,7 @@ function makeTable (str) {
     // case 1. the current character doesn't match the last character of the longest prefix
     while (maxPrefix > 0 && str.charAt(i) !== str.charAt(maxPrefix)) {
       // if that is the case, we have to backtrack, and try find a character  that will be equal to the current character
-      // if we reach 0, then we couldn't find a chracter
+      // if we reach 0, then we couldn't find a character
       maxPrefix = table[maxPrefix - 1]
     }
     // case 2. The last character of the longest prefix matches the current character in `str`

Sorts/BucketSort.js

@@ -54,11 +54,11 @@ function bucketSort (list, size) {
 }
 
 // Testing
-const arrOrignal = [5, 6, 7, 8, 1, 2, 12, 14]
-// > bucketSort(arrOrignal)
+const arrOriginal = [5, 6, 7, 8, 1, 2, 12, 14]
+// > bucketSort(arrOriginal)
 // [1, 2, 5, 6, 7, 8, 12, 14]
 // Array before Sort
-console.log(arrOrignal)
-const arrSorted = bucketSort(arrOrignal)
+console.log(arrOriginal)
+const arrSorted = bucketSort(arrOriginal)
 // Array after sort
 console.log(arrSorted)

Sorts/IntroSort.js

@@ -1,7 +1,7 @@
 /**
  * @function Intosort (As implemented in STD C++ Lib)
  * The function performs introsort which is used in
- * C++ Standard LIbrary, the implemntation is inspired from]
+ * C++ Standard LIbrary, the implementation is inspired from]
  * library routine itself.
  * ALGORITHM:
  * 1) It performs quicksort on array until the recursion depth
@@ -111,7 +111,7 @@ function introsort (array, compare) {
      */
     quickSort(0, len, maxDepth)
     /**
-     * A final checlk call to insertion sort
+     * A final check call to insertion sort
      * on sorted array
      */
     insertionSort(0, len)
@@ -140,7 +140,7 @@ function introsort (array, compare) {
     }
     /**
      * @function Helper function to quicksort
-     * @param {Number} start the start of array segment to partitiion
+     * @param {Number} start the start of array segment to partition
      * @param {Number} last  one more than last index of the array segment
      * @param {Number} pivot the index of pivot to be used
      * @returns {Number} the index of pivot after partition

Sorts/QuickSortRecursive.js

@@ -37,7 +37,7 @@ const quickSort = (inputList, low, high) => {
 
 /**
  * Partition In Place method.
- * @param {number[]} partitionList list for partiting.
+ * @param {number[]} partitionList list for partitioning.
  * @param {number} low lower index for partition.
  * @param {number} high higher index for partition.
  * @returns {number} `pIndex` pivot index value.

Sorts/TimSort.js

@@ -30,7 +30,7 @@ const Timsort = (array) => {
 /**
  * @function performs insertion sort on the partition
  * @param {Array} array array to be sorted
- * @param {Number} left left index of partiton
+ * @param {Number} left left index of partition
  * @param {Number} right right index of partition
  */
 

String/AlternativeStringArrange.js

@@ -14,24 +14,24 @@ const AlternativeStringArrange = (str1, str2) => {
     return 'Not string(s)'
   }
 
-  // output string vlaue.
+  // output string value.
   let outStr = ''
 
   // get first string length.
   const firstStringLength = str1.length
   // get second string length.
   const secondStringLength = str2.length
-  // absolute length for oparetion.
-  const absLenght = firstStringLength > secondStringLength ? firstStringLength : secondStringLength
+  // absolute length for operation.
+  const absLength = firstStringLength > secondStringLength ? firstStringLength : secondStringLength
 
   // Iterate the character count until the absolute count is reached.
-  for (let charCount = 0; charCount < absLenght; charCount++) {
-    // If firstStringLength is lesser than the charCount it means they are able to re-arange.
+  for (let charCount = 0; charCount < absLength; charCount++) {
+    // If firstStringLength is lesser than the charCount it means they are able to re-arrange.
     if (charCount < firstStringLength) {
       outStr += str1[charCount]
     }
 
-    // If secondStringLength is lesser than the charCount it means they are able to re-arange.
+    // If secondStringLength is lesser than the charCount it means they are able to re-arrange.
     if (charCount < secondStringLength) {
       outStr += str2[charCount]
     }

String/CheckPalindrome.js

@@ -8,7 +8,7 @@ const checkPalindrome = (str) => {
   if (str.length === 0) {
     return 'Empty string'
   }
-  // Reverse only works with array, thus conevert the string to array, reverse it and convert back to string
+  // Reverse only works with array, thus convert the string to array, reverse it and convert back to string
   // return as palindrome if the reversed string is equal to the input string
   const reversed = [...str].reverse().join('')
   return str === reversed ? 'Palindrome' : 'Not a Palindrome'

String/LevenshteinDistance.js

@@ -15,12 +15,12 @@ const levenshteinDistance = (a, b) => {
     .fill(null)
     .map(() => Array(a.length + 1).fill(null))
 
-  // Initialising first column:
+  // Initializing first column:
   for (let i = 0; i <= a.length; i += 1) {
     distanceMatrix[0][i] = i
   }
 
-  // Initialising first row:
+  // Initializing first row:
   for (let j = 0; j <= b.length; j += 1) {
     distanceMatrix[j][0] = j
   }

String/MaxWord.js

@@ -1,15 +1,15 @@
-// Given a sentence, return the most occuring word
+// Given a sentence, return the most occurring word
 
 /**
- * @param {string} sentence - the sentence you want to find the most occuring word
- * @returns {string} - the most occuring word
+ * @param {string} sentence - the sentence you want to find the most occurring word
+ * @returns {string} - the most occurring word
  *
  * @example
  *     -  maxWord('lala lili lala'); // lala
  */
 const maxWord = (sentence = '') => {
   if (typeof sentence !== 'string') {
-    throw new TypeError('the param sould be string')
+    throw new TypeError('the param should be string')
   }
 
   if (!sentence) {

String/test/MaxWord.test.js

@@ -6,7 +6,7 @@ describe('Testing the maxWord function', () => {
   })
   it('get the max word', () => {
     const string = 'ba ba ba ba banana'
-    const mostOccuringWord = maxWord(string)
-    expect(mostOccuringWord).toBe('ba')
+    const mostOccurringWord = maxWord(string)
+    expect(mostOccurringWord).toBe('ba')
   })
 })

String/test/PatternMatching.test.js

@@ -18,7 +18,7 @@ describe('checkIfPatternExists', () => {
     const SUT = checkIfPatternExists(text, pattern)
     expect(SUT).toBe(undefined)
   })
-  it('expects to throw an error message when given inpuut is not a string', () => {
+  it('expects to throw an error message when given input is not a string', () => {
     const text = 123444456
     const pattern = 123
     expect(() => checkIfPatternExists(text, pattern)).toThrow(

Trees/BreadthFirstTreeTraversal.js

@@ -25,7 +25,7 @@ class BinaryTree {
     return this.traversal.toLocaleString()
   }
 
-  // Compputing the height of the tree
+  // Computing the height of the tree
   getHeight (node) {
     if (node == null) {
       return 0