Leetcode problem 82 - Lexicographically Smallest Palindrome
You are given a string s consisting of lowercase English letters, and you are allowed to perform operations on it. In one operation, you can replace a charac...
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Leetcode problem 81 - Maximum Sum With Exactly K Elements
You are given a 0-indexed integer array nums and an integer k. Your task is to perform the following operation exactly k times in order to maximize your scor...
Leetcode problem 80 - Maximum 69 Number
You are given a positive integer num consisting only of digits 6 and 9.
Leetcode problem 79 - Split a String in Balanced Strings
Balanced strings are those that have an equal quantity of ‘L’ and ‘R’ characters.
Leetcode problem 78 - Minimum Sum of Four Digit Number After Splitting Digits
You are given a positive integer num consisting of exactly four digits. Split num into two new integers new1 and new2 by using the digits found in num. Leadi...