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Java基础题,求大神看看??

import java.util.Scanner; public class Counter { public static void main(String[] args) { static Scanner scanner = new Scanner(System.in); private int Character = 0; System.out.println("请输入一个字符串:"); String str = scanner.nextLine(); for (int i = 0; i < str.length(); i++) { char tmp = str.charAt(i); i

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