1323. 6 和 9 组成的最大数字

https://leetcode-cn.com/problems/maximum-69-number/

Java

/*
 * @Author: Goog Tech
 * @Date: 2020-08-21 17:41:16
 * @LastEditTime: 2020-08-21 17:41:59
 * @Description: https://leetcode-cn.com/problems/maximum-69-number/
 * @FilePath: \leetcode-googtech\#1323. Maximum 69 Number\Solution.java
 * @WebSite: https://algorithm.show/
 */

class Solution {
    public int maximum69Number (int num) {
        return Integer.valueOf(String.valueOf(num).replaceFirst("6", "9"));
    }
}

Python

'''
Author: Goog Tech
Date: 2020-08-21 17:41:24
LastEditTime: 2020-08-21 17:41:49
Description: https://leetcode-cn.com/problems/maximum-69-number/
FilePath: \leetcode-googtech\#1323. Maximum 69 Number\Solution.py
WebSite: https://algorithm.show/
'''

class Solution(object):
    def maximum69Number (self, num):
        """
        :type num: int
        :rtype: int
        """
        return int(str(num).replace("6", "9", 1))