Search⌘ K
AI Features
Home
Courses
Grokking the Coding Interview Patterns in Go

Solution: Total Appeal of a String

Explore how to efficiently compute the total appeal of a string by analyzing each character's unique contribution across substrings. Understand the use of hash maps to track character occurrences and apply an O(n) algorithm to optimize counting distinct characters in all possible substrings.

We'll cover the following...

Statement

Given a string s, return its total appeal, which is calculated by summing the appeals of all its substringsA substring is a contiguous sequence of characters within a string..

The appeal of a string is defined as the count of unique characters present in that string.

For instance, the appeal of “xyzxz” is 3 ...