K Unique String
Given a string s of lowercase alphabet characters, and an integer k, return the minimum number of changes needed in the string (one change involves changing ...
Posts with tag 'heap'
Merging K Sorted Lists
Given a list of sorted lists of integers, merge them into one large sorted list.
Selling Products
You are given a list of integers items and an integer n. A salesperson has items in a bag with random IDs. The salesperson can remove as many as n items from...
One Integer
You are given a list of integers nums. You can reduce the length of nums by taking any two integers, removing them, and appending their sum to the end. The c...
Minimize Number of Unique Integers After Removals
You are given a list of integers nums and an integer n. Given you must remove exactly n numbers, return the least number of unique integers after the removal...
Cell Fusion
You are given a list of integers cells, representing sizes of different cells. In each iteration, the two largest cells a and b interact according to these r...