Data commit

Task/Teacup-rim-text/Go/teacup-rim-text.go

@@ -0,0 +1,70 @@
+package main
+
+import (
+    "bufio"
+    "fmt"
+    "log"
+    "os"
+    "sort"
+    "strings"
+)
+
+func check(err error) {
+    if err != nil {
+        log.Fatal(err)
+    }
+}
+
+func readWords(fileName string) []string {
+    file, err := os.Open(fileName)
+    check(err)
+    defer file.Close()
+    var words []string
+    scanner := bufio.NewScanner(file)
+    for scanner.Scan() {
+        word := strings.ToLower(strings.TrimSpace(scanner.Text()))
+        if len(word) >= 3 {
+            words = append(words, word)
+        }
+    }
+    check(scanner.Err())
+    return words
+}
+
+func rotate(runes []rune) {
+    first := runes[0]
+    copy(runes, runes[1:])
+    runes[len(runes)-1] = first
+}
+
+func main() {
+    dicts := []string{"mit_10000.txt", "unixdict.txt"} // local copies
+    for _, dict := range dicts {
+        fmt.Printf("Using %s:\n\n", dict)
+        words := readWords(dict)
+        n := len(words)
+        used := make(map[string]bool)
+    outer:
+        for _, word := range words {
+            runes := []rune(word)
+            variants := []string{word}
+            for i := 0; i < len(runes)-1; i++ {
+                rotate(runes)
+                word2 := string(runes)
+                if word == word2 || used[word2] {
+                    continue outer
+                }
+                ix := sort.SearchStrings(words, word2)
+                if ix == n || words[ix] != word2 {
+                    continue outer
+                }
+                variants = append(variants, word2)
+            }
+            for _, variant := range variants {
+                used[variant] = true
+            }
+            fmt.Println(variants)
+        }
+        fmt.Println()
+    }
+}