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179. Largest Number
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.
思路:将array排序,按照相互之间加和大者在前的排在前面为标准.
public class Solution { public String largestNumber(int[] nums) { String[] res=new String[nums.length]; for(int i=0;i<nums.length;i++) { res[i]=String.valueOf(nums[i]); } Arrays.sort(res,(str1,str2)->(str2+str1).compareTo(str1+str2)); if(res[0].equals("0")) { return "0"; } StringBuilder sb=new StringBuilder(); for(String check:res) { sb.append(check); } return sb.toString(); }}
179. Largest Number
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