Initial Commit

go/scrabble-score/README.md

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+# Scrabble Score
+
+Write a program that, given a word, computes the scrabble score for that word.
+
+## Letter Values
+
+You'll need these:
+
+```plain
+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
+```
+
+## Examples
+"cabbage" should be scored as worth 14 points:
+
+- 3 points for C
+- 1 point for A, twice
+- 3 points for B, twice
+- 2 points for G
+- 1 point for E
+
+And to total:
+
+- `3 + 2*1 + 2*3 + 2 + 1`
+- = `3 + 2 + 6 + 3`
+- = `5 + 9`
+- = 14
+
+## Extensions
+- You can play a `:double` or a `:triple` letter.
+- You can play a `:double` or a `:triple` word.
+
+To run the tests simply run the command `go test` in the exercise directory.
+
+If the test suite contains benchmarks, you can run these with the `-bench`
+flag:
+
+    go test -bench .
+
+For more detailed info about the Go track see the [help
+page](http://help.exercism.io/getting-started-with-go.html).
+
+## Source
+
+Inspired by the Extreme Startup game [view source](https://github.com/rchatley/extreme_startup)

go/scrabble-score/scrabble_score.go

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+package scrabble_score
+
+import "strings"
+
+// Score takes a word and returns the
+// Scrabble score for that word
+func Score(word string) int {
+	word = strings.ToUpper(word)
+	letterValues := map[rune]int{
+		'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,
+	}
+	var ret int
+	for _, ch := range word {
+		ret += letterValues[ch]
+	}
+	return ret
+}

go/scrabble-score/scrabble_score_test.go

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+package scrabble_score
+
+import "testing"
+
+var tests = []struct {
+	input    string
+	expected int
+}{
+	{"", 0},
+	{" \t\n", 0},
+	{"a", 1},
+	{"f", 4},
+	{"street", 6},
+	{"quirky", 22},
+	{"oxyphenbutazone", 41},
+	{"alacrity", 13},
+}
+
+func TestScore(t *testing.T) {
+	for _, test := range tests {
+		if actual := Score(test.input); actual != test.expected {
+			t.Errorf("Score(%q) expected %d, Actual %d", test.input, test.expected, actual)
+		}
+	}
+}
+
+func BenchmarkScore(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		for _, test := range tests {
+			Score(test.input)
+		}
+	}
+}