Har xil harflar soni masalasining sharti nima?

Kichik lotin harflaridan iborat s satr berilgan. Satrda nechta har xil harf qatnashganini toping. [[rasm: string-har-xil-harflar-1.svg | Satrdagi takrorlanmas…

Har xil harflar soni masalasini qaysi dasturlash tillarida yechish mumkin?

ALGOR platformasida ushbu masalani C++, C, C#, Java, Python, JavaScript, PHP, Pascal, PyPy, Go, Kotlin, Rust, PascalABC.NET, TypeScript va Ruby dasturlash tillarida onlayn yechish va tekshirish mumkin.

String

String-17 String-18 String-19

~/algor $ cat masalalar/string-har-xil-harflar

String-18

Har xil harflar soni

Muallif: Iqbolshoh Ilhomjonov

Oson 1000 ms 128 MB 29%

Urinishlar Ulashish

Kichik lotin harflaridan iborat $s$ satr berilgan. Satrda nechta har xil harf qatnashganini toping.

Satrdagi takrorlanmas noyob harflar to'plamini aniqlash sxemasi

Kiruvchi ma'lumotlar

Bitta qatorda $s$ satri.

Chiquvchi ma'lumotlar

Bitta butun son ($1$ dan $26$ gacha).

Izoh

$1 \le |s| \le 10^{5}$
$s$ faqat kichik lotin harflaridan (a–z) iborat

Misollar

Kirish #1

banana

Chiqish #1

Kirish #2

abcabc

Chiqish #2