-
Notifications
You must be signed in to change notification settings - Fork 2
/
LargestNumber.java
41 lines (37 loc) · 1.06 KB
/
LargestNumber.java
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
class MyComparator implements Comparator<Integer> {
@Override
public int compare(Integer a, Integer b) {
StringBuilder sb1 = new StringBuilder();
sb1.append(a);
sb1.append(b);
StringBuilder sb2 = new StringBuilder();
sb2.append(b);
sb2.append(a);
String op1 = sb1.toString();
String op2 = sb2.toString();
if (op1.compareTo(op2) > 0) {
return 1;
} else if (op1.compareTo(op2) < 0) {
return -1;
} else {
return 0;
}
}
}
public class Solution {
public String largestNumber(int[] nums) {
List<Integer> list = new ArrayList<Integer>();
for (int i = 0; i < nums.length; i++) {
list.add(nums[i]);
}
Collections.sort(list, new MyComparator());
StringBuilder sb = new StringBuilder();
for (int i = list.size() - 1; i >= 0; i--) {
sb.append(list.get(i));
}
if (sb.charAt(0) == '0') {
return "0";
}
return sb.toString();
}
}