Letter Tile Possibilities
Explore how to calculate the number of unique sequences formed from given letter tiles by applying subset and permutation patterns. Understand constraints and approach problems involving combinations effectively to enhance your coding interview skills.
We'll cover the following...
We'll cover the following...
Statement
You are given a string, tiles, consisting of uppercase English letters. You can arrange the tiles into sequences of any length (from 1 to the length of tiles), and each sequence must include at most one tile, tiles[i], from tiles.
Your task is to return the number of possible non-empty unique sequences you can make using the letters represented on tiles[i]. ...