Run-length encoding

Satr s berilgan. Uni run-length encoding (RLE) usulida siqing: har bir ketma-ket takrorlanuvchi belgi guruhini "belgi + takrorlanish soni" bilan almashtiring. Masalan: "aaabbc" → "a3b2c1".

func solve(s string) string {
    // ...
}

Misollar

Input: S='aaabbc'
Output: "a3b2c1"

Input: S='aabbccdd'
Output: "a2b2c2d2"

Input: S='abc'
Output: "a1b1c1"

Maslahatlar

1. []rune(s) ni aylanib, ketma-ket bir xil belgilar sonini sanang.
2. Guruh tugaganda belgi + strconv.Itoa(soni) ni natijaga qo'shing.