ds-algo-study/DS-n-Algos/ALGO/UNSORTED/Missing Letters.js

Just experimenting with publishing a package

//Find the missing letter in the passed letter range and return it.If all letters are present in the range, return undefined.
function missingLetter(str){
for(let i=1; i<=str.length; i++){
    if((str.charCodeAt(i)-str.charCodeAt(i-1))>1){
return String.fromCharCode(str.charCodeAt(i-1) + 1)
    }
}
}
console.log(missingLetter("abcdefghjklmno"));
console.log(missingLetter("abce"));
console.log(missingLetter("abcdefg"));
//("acd").charCodeAt(0)-> 97
//String.fromCharCode(("acd").charCodeAt(0)) -> "a"