Given a list of non negative integers, arrange them such that they form the largest number.
For example, given [3, 30, 34, 5, 9], the largest formed number is 9534330.
Note: The result may be very large, so you need to return a string instead of an integer.
class Solution {
public String largestNumber(int[] nums) {
if (nums == null || nums.length == 0) return "";
String[] strs = new String[nums.length];
for (int i = 0; i < nums.length; i++) {
strs[i] = nums[i]+"";
}
Arrays.sort(strs, new Comparator<String>() {
@Override
public int compare(String i, String j) {
String s1 = i+j;
String s2 = j+i;
return s1.compareTo(s2);
}
});
if (strs[strs.length-1].charAt(0) == '0') return "0";
String res = new String();
for (int i = 0; i < strs.length; i++) {
res = strs[i]+res;
}
return res;
}
}
