题解 | #字符个数统计#
字符个数统计
https://www.nowcoder.com/practice/eb94f6a5b2ba49c6ac72d40b5ce95f50
import Foundation
while let line = readLine() {
var map = Set<Character>()
for ch in line {
map.insert(ch)
}
print(map.count)
// print(Int(parts[0])! + Int(parts[1])!)
}
