3784. Minimum Deletion Cost to Make All Characters Equal

You are given a string s of length n and an integer array cost of the same length, where cost[i] is the cost to delete the ith character of s. You may delete any number of characters from s (possibly none), such that the resulting string is non-empty and consists of equal characters. Return an integer denoting the minimum total deletion cost required. Example 1: Input: s = "aabaac", cost = [