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36 lines
1.6 KiB
JavaScript
36 lines
1.6 KiB
JavaScript
/*
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Explanation :- a user gives a String (it can be incomplete lower or
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partial lower) and then the program would convert it into a
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complete(all characters in upper case) upper case string. The
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logic we have used in the following program is: All the lower case
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characters (a-z) has ASCII value ranging from 97 to 122 and their
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corresponding upper case characters (A-Z) have ASCII values 32
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lesser than them. For example ‘a‘ has an ASCII value of 97
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and ‘A‘ has an ASCII value of 65 (97 - 32). The same applies to other
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characters.
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*/
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/**
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* UpperCaseConversion takes any case-style string and converts it to the upper case-style string.
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* @param {String} inputString any case style string
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* @returns {String} upper case string
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*/
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const UpperCaseConversion = (inputString) => {
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// Take a string and split it into characters.
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const newString = inputString.split('').map(char => {
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// Get a character code by the use charCodeAt method.
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const presentCharCode = char.charCodeAt()
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// If the character code lies between 97 to 122 it means they are in the lower case so convert it.
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if (presentCharCode >= 97 && presentCharCode <= 122) {
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// Convert the case by use of the above explanation.
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return String.fromCharCode(presentCharCode - 32)
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}
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// Else return the characters without any modification.
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return char
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})
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// After modification, with the help of the join method, join all the characters and return them.
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return newString.join('')
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}
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module.exports = UpperCaseConversion
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