Solution: Largest Palindromic Number
Explore how to apply a greedy technique to build the largest palindromic number from a string of digits. Understand the step-by-step process of counting digit frequencies, pairing digits from highest to lowest, and placing the optimal middle digit, ensuring no leading zeros. This lesson equips you with the skills to implement a linear time and space solution for palindrome optimization problems.
We'll cover the following...
Statement
You are given a string num consisting of digits from num. The resulting palindromic number must not have leading zeros.
Note: You may reorder the digits freely, and you must use at least one digit from the
numstring.
Constraints:
num.length...