#1881
Maximum Value after Insertion
expert · 1030 · lc medium +32 · verified · 39.2% accepted · 401 likes · top 18%
Description
Given a very large integer represented as a string n (possibly negative) and a digit x (both in range [1, 9]), insert digit x at any position in n (but not before a negative sign) to produce the numerically largest possible value.
Return the result as a string.
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.
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