化简叠词

代码如下：

import org.junit.Test;

public class ReduplicatedWords {
	/*
	 * 化简叠词：如aaabccd,化简为a3bc2d
	 */
	@Test
	public void reduplicatedWords() {
		String s = "aaabbbbccdddfgsss";
		String res = "";
		int count = 1;
		for (int i = 1; i < s.length(); i++) {
			if (s.charAt(i) == s.charAt(i - 1)) {
				count++;
				// 如果是最后类字符，需特殊处理
				if (i == s.length() - 1) {
					res = res + s.charAt(i) + count;
				}
				continue;
			} else {
				res = res + s.charAt(i - 1) + count;
				count = 1;
			}
		}
		System.out.println(res);
	}
}