forked from TheAlgorithms/JavaScript
-
Notifications
You must be signed in to change notification settings - Fork 0
/
CheckWordOccurrence.js
27 lines (23 loc) · 816 Bytes
/
CheckWordOccurrence.js
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
/**
* @function checkWordOccurrence
* @description - this function count all the words in a sentence and return an word occurrence object
* @param {string} str
* @param {boolean} isCaseSensitive
* @returns {Object}
*/
const checkWordOccurrence = (str, isCaseSensitive = false) => {
if (typeof str !== 'string') {
throw new TypeError('The first param should be a string')
}
if (typeof isCaseSensitive !== 'boolean') {
throw new TypeError('The second param should be a boolean')
}
const modifiedStr = isCaseSensitive ? str.toLowerCase() : str
return modifiedStr
.split(/\s+/) // remove all spaces and distribute all word in List
.reduce((occurrence, word) => {
occurrence[word] = occurrence[word] + 1 || 1
return occurrence
}, {})
}
export { checkWordOccurrence }