题解 | #字符个数统计#

字符串去重，求长度。 import java.util.Scanner;

public class Main { public static void main(String[] args) { Scanner scanner = new Scanner(System.in); while (scanner.hasNextLine()) { String string = scanner.nextLine(); String newStr = ""; for (int i = 0, size = string.length(); i < size; i++) { char c = string.charAt(i); if (c < 127) { if (string.indexOf(c) == i) { newStr = newStr.concat(String.valueOf(c)); } } } System.out.println(newStr.length()); } } }