Comparator的一个例子
2018-03-30 本文已影响0人
progressin_2240
```
import java.util.ArrayList;import java.util.Collections;import java.util.Comparator;public class Solution { public String PrintMinNumber(int [] numbers) { if(numbers.length<=0||numbers==null){ return ""; } ArrayListarray = new ArrayList(); String s = ""; for(int i=0;i(){
//源代码中compare(Integer i1,Integer i2)>0则交换i1,i2
//源代码中Collections.sort底层还是Arrays.sort()
//底层依然冒泡排序
public int compare(Integer i1,Integer i2){
String s1 = i1 + "" +i2;
String s2 = i2 + "" +i1;
return s1.compareTo(s2);
}
});
for(Integer j:array){
s += j;
}
return s;
}
}
```
