# Question

Formatted question description: https://leetcode.ca/all/179.html

 179. Largest Number

Given a list of non negative integers, arrange them such that they form the largest number.

Example 1:

Input: [10,2]
Output: "210"

Example 2:

Input: [3,30,34,5,9]
Output: "9534330"

Note: The result may be very large, so you need to return a string instead of an integer.

@tog-top100


# Algorithm

For two numbers a and b, if you convert them to strings, if ab> ba, then a will be ranked first,

• For example, 9 and 34, since 934>349, 9 is in front,
• For example, 30 and 3, because 303<330, 3 is in front of 30.

After sorting the original array according to this rule, converting each number into a string and then concatenating it is the final result.

Java