Intermediate Exercism • typescript

Scrabble Score

Challenge Overview

Your task is to compute a word's Scrabble score by summing the values of its letters.

Introduction

Scrabble is a word game where players place letter tiles on a board to form words. Each letter has a value. A word’s score is the sum of its letters’ values.

Instructions

Your task is to compute a word’s Scrabble score by summing the values of its letters.

The letters are valued as follows:

Letter	Value
A, E, I, O, U, L, N, R, S, T	1
D, G	2
B, C, M, P	3
F, H, V, W, Y	4
K	5
J, X	8
Q, Z	10

For example, the word “cabbage” is worth 14 points:

3 points for C
1 point for A
3 points for B
3 points for B
1 point for A
2 points for G
1 point for E

Source: Exercism typescript/scrabble-score

💡 View Solution

const SCORES: Record<string, number> = {
  a: 1, e: 1, i: 1, o: 1, u: 1, l: 1, n: 1, r: 1, s: 1, t: 1,
  d: 2, g: 2, b: 3, c: 3, m: 3, p: 3, f: 4, h: 4, v: 4, w: 4, y: 4,
  k: 5, j: 8, x: 8, q: 10, z: 10
};

export function score(word: string = ''): number {
  return [...word.toLowerCase()].reduce((acc, c) => acc + (SCORES[c] || 0), 0);
}