题解 | #字符串去重#
字符串去重
http://www.nowcoder.com/practice/f105c85ed9d44469986d56c27920639e
Set集合不允许有重复元素
遍历字符串，添加到集合中
import java.util.HashSet;
import java.util.Scanner;
public class Main {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
String str = scanner.nextLine();
scanner.close();
HashSet<Character> hs = new HashSet<>();
//write your code here......
for(int i=0;i < str.length();i++){
hs.add(str.charAt(i));
}
for (char c:hs) {
System.out.print(c);
}
}
}
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