题目描述: 解析:根据题目求给定字符串有多少不同的字符 代码: package March;import java.util.HashSet;import java.util.Set;/** * @author hxw * @version 1.0 * @date 2025/3/28 10:12 * @description: 2716. 最小化字符串长度 简单 */public class TwentyEight { public static void main(String[] args) { System.out.println(Solution.minimizedStringLength("cbbd")); } static class Solution { public static int minimizedStringLength(String s) { Set<Character> charSet = new HashSet<>(); for (char c : s.toCharArray()) { charSet.add(c); } return charSet.size(); } }}