vaskes
aeb641e339
https://www.codewars.com/kata/54b42f9314d9229fd6000d9c/solutions/typescript The goal of this exercise is to convert a string to a new string where each character in the new string is "(" if that character appears only once in the original string, or ")" if that character appears more than once in the original string. Ignore capitalization when determining if a character is a duplicate.
45 lines
748 B
TypeScript
45 lines
748 B
TypeScript
export function duplicateEncode(word: string) {
|
|
let res = "";
|
|
let i = 0;
|
|
|
|
while (i < word.length) {
|
|
const char = word[i];
|
|
|
|
const firstIndex = word.indexOf(char)
|
|
const lastIndex = word.lastIndexOf(char)
|
|
|
|
if (firstIndex !== lastIndex) {
|
|
res += ")"
|
|
} else {
|
|
res += "("
|
|
}
|
|
|
|
i++
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
export function duplicateEncode1(word: string) {
|
|
return word
|
|
.toLowerCase()
|
|
.split('')
|
|
.map((a, _, w) => {
|
|
return w.indexOf(a) == w.lastIndexOf(a) ? '(' : ')'
|
|
})
|
|
.join('')
|
|
}
|
|
|
|
console.log(
|
|
duplicateEncode("din"), "((("
|
|
)
|
|
console.log(
|
|
duplicateEncode("recede"), "()()()"
|
|
)
|
|
console.log(
|
|
duplicateEncode("Success"), ")())())"
|
|
)
|
|
console.log(
|
|
duplicateEncode("(( @"), "))(("
|
|
)
|