Published
Edited
Aug 11, 2022
1 star
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function catOnKeyboard(str, letter, n) {
// make new string from str
// repeat selected letter n times
let newString = ""
for (let index = 0; index < str.length; ++index) {
if (str[index].toLowerCase() == letter) {
newString += str[index].repeat(n)
} else {
newString += str[index]
}
}
return newString
}
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// unique letters in input text
letters = text
.split("") // split by char
.map(d => d.toLowerCase()) // lowercase
.filter((d,i,x) => x.indexOf(d) == i) // unique values
.filter(d => alphabet.map(x => x.letter.toLowerCase()).includes(d)) // letters only
.sort() // sorted
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