Package g1901_2000.s1903_largest_odd_number_in_string

Class Solution

java.lang.Object
g1901_2000.s1903_largest_odd_number_in_string.Solution
public class Solution extends java.lang.Object
1903 - Largest Odd Number in String.

Easy

You are given a string num, representing a large integer. Return the largest-valued odd integer (as a string) that is a non-empty substring of num, or an empty string "" if no odd integer exists.

A substring is a contiguous sequence of characters within a string.

Example 1:

Input: num = “52”

Output: “5”

Explanation: The only non-empty substrings are “5”, “2”, and “52”. “5” is the only odd number.

Example 2:

Input: num = “4206”

Output: ""

Explanation: There are no odd numbers in “4206”.

Example 3:

Input: num = “35427”

Output: “35427”

Explanation: “35427” is already an odd number.

Constraints:

  • 1 <= num.length <= 105
  • num only consists of digits and does not contain any leading zeros.

  • Constructor Summary

    Constructors
    Constructor
    Description
    Solution()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    java.lang.String
    largestOddNumber(java.lang.String 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

    • largestOddNumber

      public java.lang.String largestOddNumber(java.lang.String num)