statstring.java

这是 一个 考试测试系统。哈哈 个 考试测试系统。哈哈

package String;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

//统计字符串中各字符出现的次数

public class StatString {

	public static void main(String[] args) {

		if (args == null || args.length == 0) {
			System.out.println("请输入要统计的字符串: ");

			String ci = null;// 存储输入的字符
			int i;// 下标值

			BufferedReader br = new BufferedReader(new InputStreamReader(
					System.in));
			try {
				ci = br.readLine();
			} catch (IOException e) {
				e.printStackTrace();
			}
			System.out.println("您输入的字符串是:" + ci);
			ci.trim();
			new StatString().strcount(ci);

		}

	}

	public void strcount(String str) {
		int len = str.length();
		int index = 1;
		Strcount stc[] = new Strcount[len];
		stc[0] = new Strcount(str.charAt(0));
		for (int i = 1; i < len; i++) {
			inner: for (int j = 0; j < index; j++) {
				if (stc[j].ch == str.charAt(i)) {
					stc[j].plus();
					break inner;
				}
				if (j == index - 1) {
					stc[index++] = new Strcount(str.charAt(i));
					break inner;
				}
			}
		}
		for (int i = 0; i < index; i++) {
			System.out.println(stc[i].ch + "(" + stc[i].count + ")");
		}

	}
}

class Strcount {
	int count;
	char ch;

	public Strcount(char ch) {
		count = 1;
		this.ch = ch;
	}

	public void plus() {
		count++;
	}
}