题解 | #字符个数统计#
字符个数统计
http://www.nowcoder.com/practice/eb94f6a5b2ba49c6ac72d40b5ce95f50
import java.util.Scanner; public class Main{ public static void main(String[] args){ String str = new Scanner(System.in).nextLine(); int count = 0; for (int i = 0; i < str.length(); i++) { if (str.indexOf(str.charAt(i)) == i) { count++; } } System.out.println(count); } }
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