Package g1801_1900.s1881_maximum_value_after_insertion

Class Solution

  • public class Solution
extends Object
    1881 - Maximum Value after Insertion.

    Medium

    You are given a very large integer n, represented as a string, and an integer digit x. The digits in n and the digit x are in the inclusive range [1, 9], and n may represent a negative number.

    You want to maximize n ’s numerical value by inserting x anywhere in the decimal representation of n. You cannot insert x to the left of the negative sign.

    • For example, if n = 73 and x = 6, it would be best to insert it between 7 and 3, making n = 763.
    • If n = -55 and x = 2, it would be best to insert it before the first 5, making n = -255.

    Return a string representing the maximum value of n_ after the insertion_.

    Example 1:

    Input: n = “99”, x = 9

    Output: “999”

    Explanation: The result is the same regardless of where you insert 9.

    Example 2:

    Input: n = “-13”, x = 2

    Output: “-123”

    Explanation: You can make n one of {-213, -123, -132}, and the largest of those three is -123.

    Constraints:

    • 1 <= n.length <= 105
    • 1 <= x <= 9
    • The digits in n are in the range [1, 9].
    • n is a valid representation of an integer.
    • In the case of a negative n, it will begin with '-'.

    • Constructor Detail

      • Solution

        public Solution()

    • Method Detail