题解 | #最大数#

public class Solution {
    /**
     * 最大数
     * @param nums int整型一维数组 
     * @return string字符串
     */
    public String solve (int[] nums) {
        // write code here
        
        StringBuilder result = new StringBuilder();
        for(int i = 0;i< nums.length; i++){
            for(int j = i +1;j<nums.length;j++){
                String a = Integer.toString(nums[i]) +Integer.toString(nums[j]);
                String b = Integer.toString(nums[j]) +Integer.toString(nums[i]);
                if(Integer.parseInt(a) < Integer.parseInt(b)){
                    int temp = nums[i];
                    nums[i] = nums[j];
                    nums[j] = temp;
                }
            }
        }
        for(int i = 0;i<nums.length;i++){
            if(nums[0] == 0 ){
                return "0";
            }
            result.append(nums[i]);
        }
        return result.toString();
    }
}