resolved conflicts

Author: keshav-bohr

Conversions/TitleCaseConversion.js

@@ -1,19 +1,23 @@
 /*
-    Problem statement and Explanation : https://www.codeproject.com/Tips/162540/Letter-Case-Conversion-Algorithms-Title-Case-Toggl
+    Problem statement and Explanation : https://www.codeproject.com/Tips/162540/Letter-Case-Conversion-Algorithms-Title-Case-Toggl.
+    [Title case](https://en.wikipedia.org/wiki/Title_case) is a style where all words are capitalized. Officially, title case
+    does not capitalize some words, such as very short words like "a" or "is", but for the purposes of this function, a general approach
+    is taken where all words are capitalized regardless of length.
 */
 
 /**
- * The TitleCaseConversion converts a string into a title case string.
- * @param {String} inputString input string
- * @returns {String}
+ * The titleCaseConversion function converts a string into a title case string.
+ * @param {string} inputString The input string which can have any types of letter casing.
+ * @returns {string} A string that is in title case.
  */
-const TitleCaseConversion = (inputString) => {
+const titleCaseConversion = (inputString) => {
+  if (inputString === '') return ''
   // Extract all space separated string.
   const stringCollections = inputString.split(' ').map(word => {
     let firstChar = ''
-    // Get a character code by the use charCodeAt method.
+    // Get the [ASCII](https://en.wikipedia.org/wiki/ASCII) character code by the use charCodeAt method.
     const firstCharCode = word[0].charCodeAt()
-    // If the character code lies between 97 to 122 it means they are in the lower case so convert it.
+    // If the ASCII character code lies between 97 to 122 it means they are in the lowercase so convert it.
     if (firstCharCode >= 97 && firstCharCode <= 122) {
       // Convert the case by use of the above explanation.
       firstChar += String.fromCharCode(firstCharCode - 32)
@@ -22,21 +26,21 @@ const TitleCaseConversion = (inputString) => {
       firstChar += word[0]
     }
     const newWordChar = word.slice(1).split('').map(char => {
-      // Get a character code by the use charCodeAt method.
+      // Get the ASCII character code by the use charCodeAt method.
       const presentCharCode = char.charCodeAt()
-      // If the character code lies between 65 to 90 it means they are in the upper case so convert it.
+      // If the ASCII character code lies between 65 to 90, it means they are in the uppercase so convert it.
       if (presentCharCode >= 65 && presentCharCode <= 90) {
         // Convert the case by use of the above explanation.
         return String.fromCharCode(presentCharCode + 32)
       }
       // Else return the characters without any modification.
       return char
     })
-    // return the first converted character and remaining character string.
+    // Return the first converted character and remaining character string.
     return firstChar + newWordChar.join('')
   })
-  // convert all words in a string and return it.
+  // Convert all words in a string and return it.
   return stringCollections.join(' ')
 }
 
-module.exports = TitleCaseConversion
+export { titleCaseConversion }

Conversions/test/TitleCaseConversion.test.js

@@ -0,0 +1,51 @@
+import { titleCaseConversion } from '../TitleCaseConversion'
+
+describe(('Tests for the titleCaseConversion function'), () => {
+  it('should return an empty string when the input is an empty string', () => {
+    expect(titleCaseConversion('')).toEqual('')
+  })
+
+  it('should return the input string when the input string is a title case string', () => {
+    expect(titleCaseConversion('A Proper Title Case String')).toEqual('A Proper Title Case String')
+  })
+
+  it('should return a title case string when input is an all-uppercase string', () => {
+    expect(titleCaseConversion('ALL UPPER CASE')).toEqual('All Upper Case')
+  })
+
+  it('should return a title case string when input is a title case string of with spaces', () => {
+    expect(titleCaseConversion('ALL UPPERCASE')).toEqual('All Uppercase')
+  })
+
+  it('should return a title case string when input is a title case string of with no spaces', () => {
+    expect(titleCaseConversion('ALLUPPERCASE')).toEqual('Alluppercase')
+  })
+
+  it('should return a title case string when input is a title case string with punctuation', () => {
+    expect(titleCaseConversion('All Title Case!')).toEqual('All Title Case!')
+  })
+
+  it('should return a title case string when input is an all-lowercase string with no spaces', () => {
+    expect(titleCaseConversion('lowercaseinput')).toEqual('Lowercaseinput')
+  })
+
+  it('should return a title case string when input is an all-lowercase string with spaces', () => {
+    expect(titleCaseConversion('lowercase input')).toEqual('Lowercase Input')
+  })
+
+  it('should return a title case string when input is an all-lowercase string with punctuation', () => {
+    expect(titleCaseConversion('lower, case, input.')).toEqual('Lower, Case, Input.')
+  })
+
+  it('should return a title case string when input is an mixed-case string', () => {
+    expect(titleCaseConversion('mixeD CaSe INPuT')).toEqual('Mixed Case Input')
+  })
+
+  it('should return a title case string when input is an mixed-case string with no spaces', () => {
+    expect(titleCaseConversion('mixeDCaSeINPuT')).toEqual('Mixedcaseinput')
+  })
+
+  it('should return a title case string when input is an mixed-case string with punctuation', () => {
+    expect(titleCaseConversion('mixeD, CaSe, INPuT!')).toEqual('Mixed, Case, Input!')
+  })
+})

DIRECTORY.md

@@ -56,6 +56,7 @@
   * test
     * [DecimalToHex](https://github.com/TheAlgorithms/Javascript/blob/master/Conversions/test/DecimalToHex.test.js)
     * [DecimalToRoman](https://github.com/TheAlgorithms/Javascript/blob/master/Conversions/test/DecimalToRoman.test.js)
+    * [TitleCaseConversion](https://github.com/TheAlgorithms/Javascript/blob/master/Conversions/test/TitleCaseConversion.test.js)
   * [TitleCaseConversion](https://github.com/TheAlgorithms/Javascript/blob/master/Conversions/TitleCaseConversion.js)
   * [UpperCaseConversion](https://github.com/TheAlgorithms/Javascript/blob/master/Conversions/UpperCaseConversion.js)
 

Data-Structures/Tree/Trie.js

@@ -87,7 +87,7 @@ Trie.prototype.remove = function (word, count) {
   // 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
-  if (child.count <= 0 && (Object.keys(child.children).length && child.childre.constructor === Object)) {
+  if (child.count <= 0 && (Object.keys(child.children).length && child.children.constructor === Object)) {
     child.parent.children[child.key] = undefined
   }
 }

Dynamic-Programming/SudokuSolver.js

@@ -21,14 +21,14 @@ const isValid = (board, row, col, k) => {
   return true
 }
 
-const sodokoSolver = (data) => {
+const sudokuSolver = (data) => {
   for (let i = 0; i < 9; i++) {
     for (let j = 0; j < 9; j++) {
       if (data[i][j] === '.') {
         for (let k = 1; k <= 9; k++) {
           if (isValid(data, i, j, k)) {
             data[i][j] = `${k}`
-            if (sodokoSolver(data)) {
+            if (sudokuSolver(data)) {
               return true
             } else {
               data[i][j] = '.'
@@ -44,7 +44,7 @@ const sodokoSolver = (data) => {
 
 // testing
 (() => {
-  if (sodokoSolver(_board)) {
+  if (sudokuSolver(_board)) {
     console.log(_board)
   }
 })()

README.md

@@ -25,4 +25,4 @@ See our [directory](DIRECTORY.md).
 
 ## Algorithm Explanation
 
-see our [wiki](https://github.com/TheAlgorithms/Javascript/wiki)
+See our [wiki](https://github.com/TheAlgorithms/Javascript/wiki).