Package g1301_1400.s1323_maximum_69_number

Class Solution

java.lang.Object
g1301_1400.s1323_maximum_69_number.Solution
public class Solution extends java.lang.Object
1323 - Maximum 69 Number.

Easy

You are given a positive integer num consisting only of digits 6 and 9.

Return the maximum number you can get by changing at most one digit (6 becomes 9, and 9 becomes 6).

Example 1:

Input: num = 9669

Output: 9969

Explanation:

Changing the first digit results in 6669.

Changing the second digit results in 9969.

Changing the third digit results in 9699.

Changing the fourth digit results in 9666.

The maximum number is 9969.

Example 2:

Input: num = 9996

Output: 9999

Explanation: Changing the last digit 6 to 9 results in the maximum number.

Example 3:

Input: num = 9999

Output: 9999

Explanation: It is better not to apply any change.

Constraints:

  • 1 <= num <= 104
  • num consists of only 6 and 9 digits.

  • Constructor Summary

    Constructors
    Constructor
    Description
    Solution()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    int
    maximum69Number(int num)
     

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Constructor Details

    • Solution

      public Solution()

  • Method Details

    • maximum69Number

      public int maximum69Number(int num)