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Copy pathInteger_2.java
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36 lines (28 loc) · 919 Bytes
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package HuaweiCoding;
import java.util.HashMap;
import java.util.Scanner;
/*
* 输入一个int型整数，按照从右向左的阅读顺序，返回一个不含重复数字的新的整数。
*/
public class Integer_2 {
public static void main(String[] args) {
Scanner sc=new Scanner(System.in);
while(sc.hasNext()) {
int nextInt = sc.nextInt();
String inputValue=nextInt+"";
StringBuilder sb=new StringBuilder(inputValue);
StringBuilder reverse = sb.reverse();
StringBuilder retsb=new StringBuilder();
HashMap<Character, Integer> hashMap=new HashMap<>();
for (Character value : reverse.toString().toCharArray()) {
if(hashMap.containsKey(value)) {
hashMap.put(value, hashMap.get(value)+1);
}else {
hashMap.put(value, 1);
retsb.append(value.toString());
}
}
System.out.println(retsb.toString());
}
}
}