在线求一个java小算法

[开门大吉送吉祥]

字符串：801;959;960;801;959;960;962

将里面重复的数字去掉，在线等，谢谢各位大侠。。

[bigbug9002]

import java.util.*;
public class Test1{
	public static void main(String[] args){
		int[] arr={801,959,960,801,959,960,962};
		arr=removeRepeated(arr);
		System.out.println(Arrays.toString(arr));

	}
	public static  int[] removeRepeated(int[] arr){
		HashSet<Integer> set=new HashSet<Integer>();
		for(int i:arr){
			set.add(i);
		}
		int[] newarr=new int[set.size()];
		int index=0;
		for(Integer i:set){
			newarr[index++]=0+i;
		}
		return newarr;
	}
	

[bigbug9002]

没有看清题:再来一个吧:

import java.util.*;
public class Test1{
	public static void main(String[] args){
		String str="801;959;960;801;959;960;962";
		String result=removeRepeated(str);
		System.out.println(result);

	}
	public static  String removeRepeated(String str){
		String[] strs=str.split(";");
		String result="";
		HashSet<String> hs=new HashSet<String>();
		for(String s:strs){
			if(!hs.contains(s)){
				result+=s+";";
				hs.add(s);
			}
		}
		return result.substring(0,result.length()-1);
	}
	
}

[gukuitian]

public static void main(String args[]) 
	{ 
		Set set=new HashSet();
		String str="801;959;960;801;959;960;962";
		
		String[] a=str.split(";");
		for(int i=0;i<a.length;i++)
		{
			set.add(a[i]);
		}
		System.out.print(set.toString());
	} 

[gukuitian]

[Quote=引用 3 楼 gukuitian 的回复:]
Java codepublicstaticvoid main(String args[])
{
Set set=new HashSet();
String str="801;959;960;801;959;960;962";

String[] a=str.split(";");for(int i=0;i<a.length¡­
[/Quote]
切成数组，往set里一放，自动去重复

[zhuzhusany]

        StringBuilder result = new StringBuilder();
        String str = "801;959;960;801;959;960;962";
        String[] strArr = str.split(";");
        List<String> list = new ArrayList<String>();
        for(String aStr : strArr) {
            if(!list.contains(aStr)) {
                list.add(aStr);
            }
        }
        for(String c : list) {
            result.append(c);
            result.append(";");
        }
        result.deleteCharAt(result.length() - 1);
        System.out.println(result);

[vaser]

	String str1 = "801;959;960;801;959;960;962";
	String[] str2 = str1.split(";");
	java.util.Set set = new java.util.HashSet();
	for(int j=0;j<str2.length;j++){
		set.add(str2[j]);
	}
System.out.println(set.toString().replaceAll("\\[(.*)\\]","$1").replace(',', ';'));

输出结果：960;801;962;959

[hzq237]

[Quote=引用 2 楼 bigbug9002 的回复:]
没有看清题:再来一个吧:
Java codeimport java.util.*;publicclass Test1{publicstaticvoid main(String[] args){
String str="801;959;960;801;959;960;962";
String result=removeRepeated(str);
System.out.println(result);

}publicstatic String removeRepeated(String str){
String[] strs=str.split(";");
String result="";
HashSet<String> hs=new HashSet<String>();for(String s:strs){if(!hs.contains(s)){
result+=s+";";
hs.add(s);
}
}return result.substring(0,result.length()-1);
}

}
[/Quote]

这个好!

[hui94781674]

重复发了，楼主。

[bigbug9002]

5楼的,用StringBuilder是非常棒的.

[java1109]

StringBuilder以前很少见到，学习了

[roma505]

[Quote=引用 5 楼 zhuzhusany 的回复:]
Java code
StringBuilder result=new StringBuilder();
String str="801;959;960;801;959;960;962";
String[] strArr= str.split(";");
List<String> list=new ArrayList<String>()¡­
[/Quote]


GOOD