代码演示：
package swordfingeroffer
;
import java
.util
.ArrayList
;
import java
.util
.Collections
;
import java
.util
.Comparator
;
import java
.util
.List
;
public class InterviewQuestion45 {
public String
printMinNumber(int[] numbers
) {
if (null
== numbers
|| 0 == numbers
.length
) {
return null
;
}
List
<String> list
= new ArrayList<>();
for (int num
: numbers
) {
list
.add(String
.valueOf(num
));
}
Collections
.sort(list
, new Comparator<String>() {
@Override
public int compare(String o1
, String o2
) {
String s1
= o1
+ o2
;
String s2
= o2
+ o1
;
return s1
.compareTo(s2
);
}
});
StringBuilder stringBuilder
= new StringBuilder();
for (String str
: list
) {
stringBuilder
.append(str
);
}
return stringBuilder
.toString();
}
}
