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added UpperCaseConversion method in Conversions category #668

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Merged
raklaptudirm merged 1 commit into from
Aug 27, 2021
Merged

added UpperCaseConversion method in Conversions category #668

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35 changes: 35 additions & 0 deletions Conversions/UpperCaseConversion.js
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Original file line number Diff line number Diff line change
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/*
Explanation :- a user gives a String (it can be incomplete lower or
partial lower) and then the program would convert it into a
complete(all characters in upper case) upper case string. The
logic we have used in the following program is: All the lower case
characters (a-z) has ASCII value ranging from 97 to 122 and their
corresponding upper case characters (A-Z) have ASCII values 32
lesser than them. For example ‘a‘ has an ASCII value of 97
and ‘A‘ has an ASCII value of 65 (97 - 32). The same applies to other
characters.
*/

/**
* UpperCaseConversion takes any case-style string and converts it to the upper case-style string.
* @param {String} inputString any case style string
* @returns {String} upper case string
*/
const UpperCaseConversion = (inputString) => {
// Take a string and split it into characters.
const newString = inputString.split('').map(char => {
// Get a character code by the use charCodeAt method.
const presentCharCode = char.charCodeAt()
// If the character code lies between 97 to 122 it means they are in the lower case so convert it.
if (presentCharCode >= 97 && presentCharCode <= 122) {
// Convert the case by use of the above explanation.
return String.fromCharCode(presentCharCode - 32)
}
// Else return the characters without any modification.
return char
})
// After modification, with the help of the join method, join all the characters and return them.
return newString.join('')
}

module.exports = UpperCaseConversion